./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec14_product28.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec14_product28.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash da76b57a1451220816a27c40b8cda655a945b2081fe69d46a431c484896fab87 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:47:34,112 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:47:34,214 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 02:47:34,222 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:47:34,222 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:47:34,249 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:47:34,250 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:47:34,250 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:47:34,251 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:47:34,251 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:47:34,251 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:47:34,251 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:47:34,252 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:47:34,252 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:47:34,252 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:47:34,252 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:47:34,253 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 02:47:34,253 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:47:34,253 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:47:34,253 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:47:34,253 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:47:34,253 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 02:47:34,254 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:47:34,254 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 02:47:34,254 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:47:34,254 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 02:47:34,254 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:47:34,254 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:47:34,255 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:47:34,255 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:47:34,255 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:47:34,255 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:47:34,255 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:47:34,255 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:47:34,255 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:47:34,255 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:47:34,255 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:47:34,255 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:47:34,256 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:47:34,256 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:47:34,256 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 02:47:34,256 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 02:47:34,256 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:47:34,256 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:47:34,257 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:47:34,257 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:47:34,257 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:47:34,257 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:47:34,257 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> da76b57a1451220816a27c40b8cda655a945b2081fe69d46a431c484896fab87 [2024-11-28 02:47:34,628 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:47:34,637 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:47:34,640 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:47:34,642 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:47:34,642 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:47:34,644 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/product-lines/elevator_spec14_product28.cil.c [2024-11-28 02:47:37,658 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/data/058ead0b7/9842ef91ec9e4bf8ae1c4a35be2b3141/FLAGccd775838 [2024-11-28 02:47:38,085 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:47:38,085 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/sv-benchmarks/c/product-lines/elevator_spec14_product28.cil.c [2024-11-28 02:47:38,104 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/data/058ead0b7/9842ef91ec9e4bf8ae1c4a35be2b3141/FLAGccd775838 [2024-11-28 02:47:38,120 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/data/058ead0b7/9842ef91ec9e4bf8ae1c4a35be2b3141 [2024-11-28 02:47:38,123 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:47:38,125 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:47:38,127 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:47:38,127 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:47:38,133 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:47:38,134 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:47:38" (1/1) ... [2024-11-28 02:47:38,135 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44e59d97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:47:38, skipping insertion in model container [2024-11-28 02:47:38,138 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:47:38" (1/1) ... [2024-11-28 02:47:38,207 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:47:38,824 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/sv-benchmarks/c/product-lines/elevator_spec14_product28.cil.c[43703,43716] [2024-11-28 02:47:38,926 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:47:38,949 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:47:38,961 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [48] [2024-11-28 02:47:38,963 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification14_spec.i","") [86] [2024-11-28 02:47:38,963 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [131] [2024-11-28 02:47:38,963 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [252] [2024-11-28 02:47:38,964 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [1852] [2024-11-28 02:47:38,964 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [1870] [2024-11-28 02:47:38,964 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [2220] [2024-11-28 02:47:38,964 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [2229] [2024-11-28 02:47:38,965 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [2320] [2024-11-28 02:47:38,965 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [2981] [2024-11-28 02:47:39,064 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/sv-benchmarks/c/product-lines/elevator_spec14_product28.cil.c[43703,43716] [2024-11-28 02:47:39,115 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:47:39,170 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:47:39,171 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:47:39 WrapperNode [2024-11-28 02:47:39,171 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:47:39,174 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:47:39,174 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:47:39,174 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:47:39,187 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:47:39" (1/1) ... [2024-11-28 02:47:39,233 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:47:39" (1/1) ... [2024-11-28 02:47:39,304 INFO L138 Inliner]: procedures = 94, calls = 341, calls flagged for inlining = 28, calls inlined = 24, statements flattened = 1102 [2024-11-28 02:47:39,305 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:47:39,305 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:47:39,305 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:47:39,306 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:47:39,322 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:47:39" (1/1) ... [2024-11-28 02:47:39,326 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:47:39" (1/1) ... [2024-11-28 02:47:39,340 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:47:39" (1/1) ... [2024-11-28 02:47:39,383 INFO L175 MemorySlicer]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2]. 9 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2]. The 0 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. [2024-11-28 02:47:39,383 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:47:39" (1/1) ... [2024-11-28 02:47:39,383 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:47:39" (1/1) ... [2024-11-28 02:47:39,408 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:47:39" (1/1) ... [2024-11-28 02:47:39,410 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:47:39" (1/1) ... [2024-11-28 02:47:39,441 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:47:39" (1/1) ... [2024-11-28 02:47:39,457 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:47:39" (1/1) ... [2024-11-28 02:47:39,462 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:47:39" (1/1) ... [2024-11-28 02:47:39,486 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:47:39,487 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:47:39,487 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:47:39,487 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:47:39,488 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:47:39" (1/1) ... [2024-11-28 02:47:39,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:47:39,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:47:39,558 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:47:39,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:47:39,594 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:47:39,594 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2024-11-28 02:47:39,595 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2024-11-28 02:47:39,595 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2024-11-28 02:47:39,595 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2024-11-28 02:47:39,595 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-11-28 02:47:39,595 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-11-28 02:47:39,595 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2024-11-28 02:47:39,595 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2024-11-28 02:47:39,595 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-11-28 02:47:39,595 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-11-28 02:47:39,597 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2024-11-28 02:47:39,598 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2024-11-28 02:47:39,598 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-11-28 02:47:39,598 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-11-28 02:47:39,598 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-11-28 02:47:39,598 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-11-28 02:47:39,598 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-11-28 02:47:39,598 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-11-28 02:47:39,598 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2024-11-28 02:47:39,598 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2024-11-28 02:47:39,598 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-11-28 02:47:39,598 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-11-28 02:47:39,598 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-11-28 02:47:39,599 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-11-28 02:47:39,599 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-11-28 02:47:39,599 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-11-28 02:47:39,599 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2024-11-28 02:47:39,599 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2024-11-28 02:47:39,599 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-11-28 02:47:39,599 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-11-28 02:47:39,599 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2024-11-28 02:47:39,599 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2024-11-28 02:47:39,599 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-11-28 02:47:39,599 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-11-28 02:47:39,599 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-11-28 02:47:39,599 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-11-28 02:47:39,599 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-11-28 02:47:39,600 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-11-28 02:47:39,600 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-11-28 02:47:39,600 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-11-28 02:47:39,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 02:47:39,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 02:47:39,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 02:47:39,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-28 02:47:39,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-28 02:47:39,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-28 02:47:39,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-28 02:47:39,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-28 02:47:39,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-28 02:47:39,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-28 02:47:39,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-28 02:47:39,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-28 02:47:39,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-28 02:47:39,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-11-28 02:47:39,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-11-28 02:47:39,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-11-28 02:47:39,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-11-28 02:47:39,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2024-11-28 02:47:39,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2024-11-28 02:47:39,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2024-11-28 02:47:39,605 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-11-28 02:47:39,606 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-11-28 02:47:39,606 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-11-28 02:47:39,606 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-11-28 02:47:39,606 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-11-28 02:47:39,606 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-11-28 02:47:39,606 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:47:39,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:47:39,606 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-11-28 02:47:39,606 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-11-28 02:47:39,606 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2024-11-28 02:47:39,606 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2024-11-28 02:47:39,876 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:47:39,880 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:47:41,823 INFO L? ?]: Removed 453 outVars from TransFormulas that were not future-live. [2024-11-28 02:47:41,824 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:47:41,876 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:47:41,879 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 02:47:41,880 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:47:41 BoogieIcfgContainer [2024-11-28 02:47:41,880 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:47:41,883 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:47:41,886 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:47:41,892 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:47:41,894 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:47:38" (1/3) ... [2024-11-28 02:47:41,895 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@732b5bfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:47:41, skipping insertion in model container [2024-11-28 02:47:41,895 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:47:39" (2/3) ... [2024-11-28 02:47:41,896 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@732b5bfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:47:41, skipping insertion in model container [2024-11-28 02:47:41,896 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:47:41" (3/3) ... [2024-11-28 02:47:41,898 INFO L128 eAbstractionObserver]: Analyzing ICFG elevator_spec14_product28.cil.c [2024-11-28 02:47:41,914 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:47:41,916 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec14_product28.cil.c that has 26 procedures, 553 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-28 02:47:42,055 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:47:42,074 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1e71b5fe, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:47:42,074 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 02:47:42,081 INFO L276 IsEmpty]: Start isEmpty. Operand has 553 states, 429 states have (on average 1.6736596736596736) internal successors, (718), 447 states have internal predecessors, (718), 97 states have call successors, (97), 25 states have call predecessors, (97), 25 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2024-11-28 02:47:42,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-28 02:47:42,101 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:47:42,102 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:47:42,102 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:47:42,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:47:42,111 INFO L85 PathProgramCache]: Analyzing trace with hash 244530154, now seen corresponding path program 1 times [2024-11-28 02:47:42,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:47:42,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202898332] [2024-11-28 02:47:42,121 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:47:42,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:47:42,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:47:42,869 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 02:47:42,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:47:42,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202898332] [2024-11-28 02:47:42,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202898332] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:47:42,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:47:42,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:47:42,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335078398] [2024-11-28 02:47:42,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:47:42,884 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:47:42,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:47:42,913 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:47:42,914 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:47:42,919 INFO L87 Difference]: Start difference. First operand has 553 states, 429 states have (on average 1.6736596736596736) internal successors, (718), 447 states have internal predecessors, (718), 97 states have call successors, (97), 25 states have call predecessors, (97), 25 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-28 02:47:43,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:47:43,276 INFO L93 Difference]: Finished difference Result 1099 states and 1824 transitions. [2024-11-28 02:47:43,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:47:43,279 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 63 [2024-11-28 02:47:43,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:47:43,309 INFO L225 Difference]: With dead ends: 1099 [2024-11-28 02:47:43,309 INFO L226 Difference]: Without dead ends: 548 [2024-11-28 02:47:43,325 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:47:43,331 INFO L435 NwaCegarLoop]: 895 mSDtfsCounter, 6 mSDsluCounter, 1784 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 2679 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:47:43,334 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 2679 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:47:43,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2024-11-28 02:47:43,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 548. [2024-11-28 02:47:43,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 425 states have (on average 1.663529411764706) internal successors, (707), 442 states have internal predecessors, (707), 97 states have call successors, (97), 26 states have call predecessors, (97), 25 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2024-11-28 02:47:43,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 900 transitions. [2024-11-28 02:47:43,501 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 900 transitions. Word has length 63 [2024-11-28 02:47:43,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:47:43,505 INFO L471 AbstractCegarLoop]: Abstraction has 548 states and 900 transitions. [2024-11-28 02:47:43,505 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-28 02:47:43,505 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 900 transitions. [2024-11-28 02:47:43,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-28 02:47:43,509 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:47:43,509 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:47:43,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 02:47:43,513 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:47:43,513 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:47:43,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1235374521, now seen corresponding path program 1 times [2024-11-28 02:47:43,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:47:43,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847753188] [2024-11-28 02:47:43,514 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:47:43,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:47:43,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:47:43,824 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 02:47:43,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:47:43,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847753188] [2024-11-28 02:47:43,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847753188] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:47:43,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:47:43,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:47:43,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862212520] [2024-11-28 02:47:43,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:47:43,826 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:47:43,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:47:43,829 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:47:43,829 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:47:43,829 INFO L87 Difference]: Start difference. First operand 548 states and 900 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-28 02:47:44,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:47:44,003 INFO L93 Difference]: Finished difference Result 1079 states and 1777 transitions. [2024-11-28 02:47:44,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:47:44,004 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 64 [2024-11-28 02:47:44,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:47:44,014 INFO L225 Difference]: With dead ends: 1079 [2024-11-28 02:47:44,014 INFO L226 Difference]: Without dead ends: 548 [2024-11-28 02:47:44,018 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:47:44,021 INFO L435 NwaCegarLoop]: 886 mSDtfsCounter, 4 mSDsluCounter, 1765 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2651 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:47:44,022 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2651 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:47:44,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2024-11-28 02:47:44,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 548. [2024-11-28 02:47:44,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 425 states have (on average 1.6611764705882353) internal successors, (706), 442 states have internal predecessors, (706), 97 states have call successors, (97), 26 states have call predecessors, (97), 25 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2024-11-28 02:47:44,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 899 transitions. [2024-11-28 02:47:44,087 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 899 transitions. Word has length 64 [2024-11-28 02:47:44,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:47:44,087 INFO L471 AbstractCegarLoop]: Abstraction has 548 states and 899 transitions. [2024-11-28 02:47:44,088 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-28 02:47:44,088 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 899 transitions. [2024-11-28 02:47:44,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-28 02:47:44,096 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:47:44,096 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:47:44,096 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 02:47:44,096 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:47:44,097 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:47:44,097 INFO L85 PathProgramCache]: Analyzing trace with hash 668491590, now seen corresponding path program 1 times [2024-11-28 02:47:44,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:47:44,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110868873] [2024-11-28 02:47:44,097 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:47:44,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:47:44,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:47:44,422 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 02:47:44,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:47:44,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110868873] [2024-11-28 02:47:44,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110868873] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:47:44,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:47:44,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:47:44,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313290784] [2024-11-28 02:47:44,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:47:44,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:47:44,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:47:44,427 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:47:44,427 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:47:44,428 INFO L87 Difference]: Start difference. First operand 548 states and 899 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-28 02:47:44,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:47:44,543 INFO L93 Difference]: Finished difference Result 1079 states and 1776 transitions. [2024-11-28 02:47:44,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:47:44,544 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 65 [2024-11-28 02:47:44,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:47:44,554 INFO L225 Difference]: With dead ends: 1079 [2024-11-28 02:47:44,554 INFO L226 Difference]: Without dead ends: 548 [2024-11-28 02:47:44,558 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:47:44,559 INFO L435 NwaCegarLoop]: 886 mSDtfsCounter, 3 mSDsluCounter, 1765 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2651 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:47:44,561 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2651 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:47:44,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2024-11-28 02:47:44,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 548. [2024-11-28 02:47:44,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 425 states have (on average 1.6588235294117648) internal successors, (705), 442 states have internal predecessors, (705), 97 states have call successors, (97), 26 states have call predecessors, (97), 25 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2024-11-28 02:47:44,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 898 transitions. [2024-11-28 02:47:44,634 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 898 transitions. Word has length 65 [2024-11-28 02:47:44,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:47:44,634 INFO L471 AbstractCegarLoop]: Abstraction has 548 states and 898 transitions. [2024-11-28 02:47:44,634 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-28 02:47:44,634 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 898 transitions. [2024-11-28 02:47:44,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-28 02:47:44,636 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:47:44,636 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:47:44,636 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 02:47:44,636 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:47:44,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:47:44,637 INFO L85 PathProgramCache]: Analyzing trace with hash -943297323, now seen corresponding path program 1 times [2024-11-28 02:47:44,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:47:44,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386556421] [2024-11-28 02:47:44,637 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:47:44,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:47:44,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:47:44,903 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 02:47:44,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:47:44,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386556421] [2024-11-28 02:47:44,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386556421] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:47:44,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:47:44,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:47:44,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315721282] [2024-11-28 02:47:44,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:47:44,906 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:47:44,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:47:44,906 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:47:44,907 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:47:44,907 INFO L87 Difference]: Start difference. First operand 548 states and 898 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-28 02:47:44,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:47:44,997 INFO L93 Difference]: Finished difference Result 1079 states and 1775 transitions. [2024-11-28 02:47:44,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:47:44,998 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 66 [2024-11-28 02:47:44,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:47:45,005 INFO L225 Difference]: With dead ends: 1079 [2024-11-28 02:47:45,006 INFO L226 Difference]: Without dead ends: 548 [2024-11-28 02:47:45,013 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:47:45,014 INFO L435 NwaCegarLoop]: 886 mSDtfsCounter, 2 mSDsluCounter, 1765 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2651 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:47:45,015 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2651 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:47:45,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2024-11-28 02:47:45,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 548. [2024-11-28 02:47:45,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 425 states have (on average 1.6564705882352941) internal successors, (704), 442 states have internal predecessors, (704), 97 states have call successors, (97), 26 states have call predecessors, (97), 25 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2024-11-28 02:47:45,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 897 transitions. [2024-11-28 02:47:45,052 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 897 transitions. Word has length 66 [2024-11-28 02:47:45,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:47:45,054 INFO L471 AbstractCegarLoop]: Abstraction has 548 states and 897 transitions. [2024-11-28 02:47:45,054 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-28 02:47:45,054 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 897 transitions. [2024-11-28 02:47:45,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-28 02:47:45,058 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:47:45,059 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:47:45,059 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 02:47:45,059 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:47:45,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:47:45,059 INFO L85 PathProgramCache]: Analyzing trace with hash -587433310, now seen corresponding path program 1 times [2024-11-28 02:47:45,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:47:45,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673101313] [2024-11-28 02:47:45,060 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:47:45,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:47:45,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:47:45,293 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 02:47:45,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:47:45,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673101313] [2024-11-28 02:47:45,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673101313] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:47:45,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:47:45,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:47:45,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019195733] [2024-11-28 02:47:45,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:47:45,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:47:45,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:47:45,297 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:47:45,297 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:47:45,297 INFO L87 Difference]: Start difference. First operand 548 states and 897 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-28 02:47:45,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:47:45,384 INFO L93 Difference]: Finished difference Result 1079 states and 1774 transitions. [2024-11-28 02:47:45,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:47:45,385 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 67 [2024-11-28 02:47:45,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:47:45,392 INFO L225 Difference]: With dead ends: 1079 [2024-11-28 02:47:45,392 INFO L226 Difference]: Without dead ends: 548 [2024-11-28 02:47:45,396 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:47:45,397 INFO L435 NwaCegarLoop]: 886 mSDtfsCounter, 1 mSDsluCounter, 1765 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2651 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:47:45,397 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2651 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:47:45,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2024-11-28 02:47:45,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 548. [2024-11-28 02:47:45,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 425 states have (on average 1.6541176470588235) internal successors, (703), 442 states have internal predecessors, (703), 97 states have call successors, (97), 26 states have call predecessors, (97), 25 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2024-11-28 02:47:45,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 896 transitions. [2024-11-28 02:47:45,448 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 896 transitions. Word has length 67 [2024-11-28 02:47:45,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:47:45,448 INFO L471 AbstractCegarLoop]: Abstraction has 548 states and 896 transitions. [2024-11-28 02:47:45,448 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-28 02:47:45,449 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 896 transitions. [2024-11-28 02:47:45,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-28 02:47:45,451 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:47:45,451 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:47:45,451 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 02:47:45,452 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:47:45,452 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:47:45,453 INFO L85 PathProgramCache]: Analyzing trace with hash 636129265, now seen corresponding path program 1 times [2024-11-28 02:47:45,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:47:45,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029303325] [2024-11-28 02:47:45,453 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:47:45,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:47:45,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:47:45,916 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 02:47:45,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:47:45,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029303325] [2024-11-28 02:47:45,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029303325] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:47:45,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:47:45,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 02:47:45,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3017339] [2024-11-28 02:47:45,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:47:45,918 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 02:47:45,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:47:45,920 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 02:47:45,921 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:47:45,921 INFO L87 Difference]: Start difference. First operand 548 states and 896 transitions. Second operand has 9 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-28 02:47:46,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:47:46,160 INFO L93 Difference]: Finished difference Result 1090 states and 1791 transitions. [2024-11-28 02:47:46,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 02:47:46,161 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 68 [2024-11-28 02:47:46,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:47:46,170 INFO L225 Difference]: With dead ends: 1090 [2024-11-28 02:47:46,171 INFO L226 Difference]: Without dead ends: 563 [2024-11-28 02:47:46,175 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:47:46,176 INFO L435 NwaCegarLoop]: 881 mSDtfsCounter, 91 mSDsluCounter, 6080 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 6961 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:47:46,178 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 6961 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:47:46,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2024-11-28 02:47:46,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 561. [2024-11-28 02:47:46,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 435 states have (on average 1.650574712643678) internal successors, (718), 454 states have internal predecessors, (718), 98 states have call successors, (98), 26 states have call predecessors, (98), 27 states have return successors, (100), 94 states have call predecessors, (100), 97 states have call successors, (100) [2024-11-28 02:47:46,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 916 transitions. [2024-11-28 02:47:46,227 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 916 transitions. Word has length 68 [2024-11-28 02:47:46,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:47:46,229 INFO L471 AbstractCegarLoop]: Abstraction has 561 states and 916 transitions. [2024-11-28 02:47:46,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-28 02:47:46,230 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 916 transitions. [2024-11-28 02:47:46,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-28 02:47:46,232 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:47:46,232 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:47:46,232 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 02:47:46,232 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:47:46,233 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:47:46,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1405299280, now seen corresponding path program 1 times [2024-11-28 02:47:46,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:47:46,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523647696] [2024-11-28 02:47:46,234 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:47:46,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:47:46,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:47:46,409 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 02:47:46,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:47:46,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523647696] [2024-11-28 02:47:46,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523647696] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:47:46,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:47:46,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:47:46,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516892475] [2024-11-28 02:47:46,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:47:46,412 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:47:46,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:47:46,413 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:47:46,413 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:47:46,413 INFO L87 Difference]: Start difference. First operand 561 states and 916 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-28 02:47:46,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:47:46,519 INFO L93 Difference]: Finished difference Result 1097 states and 1802 transitions. [2024-11-28 02:47:46,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:47:46,524 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 68 [2024-11-28 02:47:46,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:47:46,531 INFO L225 Difference]: With dead ends: 1097 [2024-11-28 02:47:46,531 INFO L226 Difference]: Without dead ends: 557 [2024-11-28 02:47:46,535 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:47:46,537 INFO L435 NwaCegarLoop]: 884 mSDtfsCounter, 1 mSDsluCounter, 1762 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2646 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:47:46,537 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2646 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:47:46,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2024-11-28 02:47:46,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 557. [2024-11-28 02:47:46,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557 states, 433 states have (on average 1.651270207852194) internal successors, (715), 451 states have internal predecessors, (715), 97 states have call successors, (97), 26 states have call predecessors, (97), 26 states have return successors, (97), 93 states have call predecessors, (97), 96 states have call successors, (97) [2024-11-28 02:47:46,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 909 transitions. [2024-11-28 02:47:46,583 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 909 transitions. Word has length 68 [2024-11-28 02:47:46,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:47:46,584 INFO L471 AbstractCegarLoop]: Abstraction has 557 states and 909 transitions. [2024-11-28 02:47:46,584 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-28 02:47:46,584 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 909 transitions. [2024-11-28 02:47:46,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-28 02:47:46,588 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:47:46,588 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:47:46,588 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 02:47:46,588 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:47:46,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:47:46,589 INFO L85 PathProgramCache]: Analyzing trace with hash 771380188, now seen corresponding path program 1 times [2024-11-28 02:47:46,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:47:46,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153462971] [2024-11-28 02:47:46,589 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:47:46,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:47:46,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:47:46,876 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 02:47:46,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:47:46,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153462971] [2024-11-28 02:47:46,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153462971] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:47:46,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:47:46,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:47:46,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943637104] [2024-11-28 02:47:46,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:47:46,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:47:46,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:47:46,878 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:47:46,879 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:47:46,879 INFO L87 Difference]: Start difference. First operand 557 states and 909 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-28 02:47:47,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:47:47,361 INFO L93 Difference]: Finished difference Result 1140 states and 1874 transitions. [2024-11-28 02:47:47,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 02:47:47,362 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 69 [2024-11-28 02:47:47,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:47:47,371 INFO L225 Difference]: With dead ends: 1140 [2024-11-28 02:47:47,371 INFO L226 Difference]: Without dead ends: 589 [2024-11-28 02:47:47,375 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:47:47,376 INFO L435 NwaCegarLoop]: 858 mSDtfsCounter, 72 mSDsluCounter, 3353 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 4211 SdHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 02:47:47,376 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 4211 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 02:47:47,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2024-11-28 02:47:47,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 562. [2024-11-28 02:47:47,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 438 states have (on average 1.6369863013698631) internal successors, (717), 455 states have internal predecessors, (717), 97 states have call successors, (97), 27 states have call predecessors, (97), 26 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2024-11-28 02:47:47,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 910 transitions. [2024-11-28 02:47:47,418 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 910 transitions. Word has length 69 [2024-11-28 02:47:47,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:47:47,419 INFO L471 AbstractCegarLoop]: Abstraction has 562 states and 910 transitions. [2024-11-28 02:47:47,419 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-28 02:47:47,419 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 910 transitions. [2024-11-28 02:47:47,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-28 02:47:47,420 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:47:47,421 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:47:47,421 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 02:47:47,421 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:47:47,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:47:47,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1832008396, now seen corresponding path program 1 times [2024-11-28 02:47:47,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:47:47,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833987209] [2024-11-28 02:47:47,422 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:47:47,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:47:47,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:47:47,648 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 02:47:47,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:47:47,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833987209] [2024-11-28 02:47:47,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833987209] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:47:47,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:47:47,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:47:47,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369095254] [2024-11-28 02:47:47,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:47:47,649 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:47:47,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:47:47,650 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:47:47,650 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:47:47,651 INFO L87 Difference]: Start difference. First operand 562 states and 910 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-28 02:47:48,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:47:48,019 INFO L93 Difference]: Finished difference Result 1091 states and 1769 transitions. [2024-11-28 02:47:48,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:47:48,021 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 70 [2024-11-28 02:47:48,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:47:48,030 INFO L225 Difference]: With dead ends: 1091 [2024-11-28 02:47:48,030 INFO L226 Difference]: Without dead ends: 580 [2024-11-28 02:47:48,034 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:47:48,036 INFO L435 NwaCegarLoop]: 847 mSDtfsCounter, 56 mSDsluCounter, 3341 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 4188 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:47:48,037 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 4188 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 02:47:48,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2024-11-28 02:47:48,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 562. [2024-11-28 02:47:48,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 438 states have (on average 1.6278538812785388) internal successors, (713), 455 states have internal predecessors, (713), 97 states have call successors, (97), 27 states have call predecessors, (97), 26 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2024-11-28 02:47:48,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 906 transitions. [2024-11-28 02:47:48,085 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 906 transitions. Word has length 70 [2024-11-28 02:47:48,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:47:48,085 INFO L471 AbstractCegarLoop]: Abstraction has 562 states and 906 transitions. [2024-11-28 02:47:48,086 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-28 02:47:48,086 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 906 transitions. [2024-11-28 02:47:48,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-28 02:47:48,089 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:47:48,089 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:47:48,090 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 02:47:48,090 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:47:48,091 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:47:48,092 INFO L85 PathProgramCache]: Analyzing trace with hash -846443679, now seen corresponding path program 1 times [2024-11-28 02:47:48,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:47:48,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968382116] [2024-11-28 02:47:48,093 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:47:48,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:47:48,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:47:48,326 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 02:47:48,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:47:48,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968382116] [2024-11-28 02:47:48,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968382116] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:47:48,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:47:48,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:47:48,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883045750] [2024-11-28 02:47:48,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:47:48,327 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:47:48,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:47:48,328 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:47:48,328 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:47:48,329 INFO L87 Difference]: Start difference. First operand 562 states and 906 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-28 02:47:48,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:47:48,669 INFO L93 Difference]: Finished difference Result 1091 states and 1765 transitions. [2024-11-28 02:47:48,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:47:48,670 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 71 [2024-11-28 02:47:48,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:47:48,678 INFO L225 Difference]: With dead ends: 1091 [2024-11-28 02:47:48,678 INFO L226 Difference]: Without dead ends: 580 [2024-11-28 02:47:48,682 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:47:48,683 INFO L435 NwaCegarLoop]: 846 mSDtfsCounter, 55 mSDsluCounter, 3337 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 4183 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:47:48,683 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 4183 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 02:47:48,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2024-11-28 02:47:48,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 562. [2024-11-28 02:47:48,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 438 states have (on average 1.6187214611872147) internal successors, (709), 455 states have internal predecessors, (709), 97 states have call successors, (97), 27 states have call predecessors, (97), 26 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2024-11-28 02:47:48,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 902 transitions. [2024-11-28 02:47:48,720 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 902 transitions. Word has length 71 [2024-11-28 02:47:48,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:47:48,720 INFO L471 AbstractCegarLoop]: Abstraction has 562 states and 902 transitions. [2024-11-28 02:47:48,721 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-28 02:47:48,721 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 902 transitions. [2024-11-28 02:47:48,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-28 02:47:48,722 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:47:48,722 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:47:48,723 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 02:47:48,723 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:47:48,723 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:47:48,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1024227359, now seen corresponding path program 1 times [2024-11-28 02:47:48,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:47:48,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889526477] [2024-11-28 02:47:48,724 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:47:48,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:47:48,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:47:48,936 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 02:47:48,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:47:48,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889526477] [2024-11-28 02:47:48,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889526477] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:47:48,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:47:48,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 02:47:48,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916699215] [2024-11-28 02:47:48,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:47:48,938 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 02:47:48,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:47:48,939 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 02:47:48,939 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:47:48,939 INFO L87 Difference]: Start difference. First operand 562 states and 902 transitions. Second operand has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-28 02:47:49,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:47:49,090 INFO L93 Difference]: Finished difference Result 1082 states and 1747 transitions. [2024-11-28 02:47:49,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 02:47:49,092 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 71 [2024-11-28 02:47:49,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:47:49,118 INFO L225 Difference]: With dead ends: 1082 [2024-11-28 02:47:49,118 INFO L226 Difference]: Without dead ends: 550 [2024-11-28 02:47:49,121 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:47:49,122 INFO L435 NwaCegarLoop]: 872 mSDtfsCounter, 94 mSDsluCounter, 4264 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 5136 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:47:49,123 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 5136 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:47:49,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2024-11-28 02:47:49,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 541. [2024-11-28 02:47:49,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 541 states, 417 states have (on average 1.6115107913669064) internal successors, (672), 434 states have internal predecessors, (672), 97 states have call successors, (97), 27 states have call predecessors, (97), 26 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2024-11-28 02:47:49,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 865 transitions. [2024-11-28 02:47:49,155 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 865 transitions. Word has length 71 [2024-11-28 02:47:49,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:47:49,156 INFO L471 AbstractCegarLoop]: Abstraction has 541 states and 865 transitions. [2024-11-28 02:47:49,156 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-28 02:47:49,156 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 865 transitions. [2024-11-28 02:47:49,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-28 02:47:49,158 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:47:49,158 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:47:49,158 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 02:47:49,158 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:47:49,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:47:49,159 INFO L85 PathProgramCache]: Analyzing trace with hash -272476327, now seen corresponding path program 1 times [2024-11-28 02:47:49,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:47:49,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337241722] [2024-11-28 02:47:49,159 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:47:49,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:47:49,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:47:49,343 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 02:47:49,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:47:49,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337241722] [2024-11-28 02:47:49,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337241722] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:47:49,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:47:49,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:47:49,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139636322] [2024-11-28 02:47:49,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:47:49,345 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:47:49,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:47:49,345 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:47:49,345 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:47:49,346 INFO L87 Difference]: Start difference. First operand 541 states and 865 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-28 02:47:49,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:47:49,531 INFO L93 Difference]: Finished difference Result 1061 states and 1710 transitions. [2024-11-28 02:47:49,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:47:49,532 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 72 [2024-11-28 02:47:49,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:47:49,540 INFO L225 Difference]: With dead ends: 1061 [2024-11-28 02:47:49,541 INFO L226 Difference]: Without dead ends: 550 [2024-11-28 02:47:49,545 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:47:49,546 INFO L435 NwaCegarLoop]: 847 mSDtfsCounter, 39 mSDsluCounter, 3341 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 4188 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:47:49,547 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 4188 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:47:49,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2024-11-28 02:47:49,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 541. [2024-11-28 02:47:49,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 541 states, 417 states have (on average 1.6091127098321343) internal successors, (671), 434 states have internal predecessors, (671), 97 states have call successors, (97), 27 states have call predecessors, (97), 26 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2024-11-28 02:47:49,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 864 transitions. [2024-11-28 02:47:49,584 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 864 transitions. Word has length 72 [2024-11-28 02:47:49,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:47:49,584 INFO L471 AbstractCegarLoop]: Abstraction has 541 states and 864 transitions. [2024-11-28 02:47:49,585 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-28 02:47:49,585 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 864 transitions. [2024-11-28 02:47:49,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-28 02:47:49,586 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:47:49,587 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:47:49,587 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 02:47:49,587 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:47:49,588 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:47:49,588 INFO L85 PathProgramCache]: Analyzing trace with hash 426874598, now seen corresponding path program 1 times [2024-11-28 02:47:49,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:47:49,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778981740] [2024-11-28 02:47:49,588 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:47:49,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:47:49,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:47:49,781 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 02:47:49,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:47:49,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778981740] [2024-11-28 02:47:49,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778981740] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:47:49,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:47:49,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:47:49,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481283548] [2024-11-28 02:47:49,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:47:49,782 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:47:49,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:47:49,783 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:47:49,783 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:47:49,783 INFO L87 Difference]: Start difference. First operand 541 states and 864 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-28 02:47:49,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:47:49,945 INFO L93 Difference]: Finished difference Result 1061 states and 1709 transitions. [2024-11-28 02:47:49,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:47:49,946 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 73 [2024-11-28 02:47:49,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:47:49,953 INFO L225 Difference]: With dead ends: 1061 [2024-11-28 02:47:49,954 INFO L226 Difference]: Without dead ends: 550 [2024-11-28 02:47:49,957 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:47:49,958 INFO L435 NwaCegarLoop]: 847 mSDtfsCounter, 38 mSDsluCounter, 3341 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 4188 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:47:49,959 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 4188 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:47:49,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2024-11-28 02:47:49,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 541. [2024-11-28 02:47:49,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 541 states, 417 states have (on average 1.6067146282973621) internal successors, (670), 434 states have internal predecessors, (670), 97 states have call successors, (97), 27 states have call predecessors, (97), 26 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2024-11-28 02:47:49,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 863 transitions. [2024-11-28 02:47:49,992 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 863 transitions. Word has length 73 [2024-11-28 02:47:49,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:47:49,993 INFO L471 AbstractCegarLoop]: Abstraction has 541 states and 863 transitions. [2024-11-28 02:47:49,993 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-28 02:47:49,993 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 863 transitions. [2024-11-28 02:47:49,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-28 02:47:49,995 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:47:49,995 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:47:49,995 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-28 02:47:49,995 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:47:49,996 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:47:49,996 INFO L85 PathProgramCache]: Analyzing trace with hash 718148990, now seen corresponding path program 1 times [2024-11-28 02:47:49,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:47:49,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845465759] [2024-11-28 02:47:49,997 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:47:49,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:47:50,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:47:50,362 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 02:47:50,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:47:50,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845465759] [2024-11-28 02:47:50,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845465759] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:47:50,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:47:50,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-28 02:47:50,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183986398] [2024-11-28 02:47:50,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:47:50,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 02:47:50,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:47:50,365 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 02:47:50,365 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:47:50,365 INFO L87 Difference]: Start difference. First operand 541 states and 863 transitions. Second operand has 10 states, 9 states have (on average 6.111111111111111) internal successors, (55), 9 states have internal predecessors, (55), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-28 02:47:50,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:47:50,696 INFO L93 Difference]: Finished difference Result 1051 states and 1691 transitions. [2024-11-28 02:47:50,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 02:47:50,698 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.111111111111111) internal successors, (55), 9 states have internal predecessors, (55), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 74 [2024-11-28 02:47:50,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:47:50,706 INFO L225 Difference]: With dead ends: 1051 [2024-11-28 02:47:50,706 INFO L226 Difference]: Without dead ends: 546 [2024-11-28 02:47:50,711 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-28 02:47:50,711 INFO L435 NwaCegarLoop]: 819 mSDtfsCounter, 21 mSDsluCounter, 6521 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 7340 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:47:50,712 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 7340 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 02:47:50,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2024-11-28 02:47:50,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 543. [2024-11-28 02:47:50,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543 states, 419 states have (on average 1.6014319809069213) internal successors, (671), 436 states have internal predecessors, (671), 97 states have call successors, (97), 27 states have call predecessors, (97), 26 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2024-11-28 02:47:50,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 864 transitions. [2024-11-28 02:47:50,746 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 864 transitions. Word has length 74 [2024-11-28 02:47:50,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:47:50,747 INFO L471 AbstractCegarLoop]: Abstraction has 543 states and 864 transitions. [2024-11-28 02:47:50,747 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.111111111111111) internal successors, (55), 9 states have internal predecessors, (55), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-28 02:47:50,747 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 864 transitions. [2024-11-28 02:47:50,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-28 02:47:50,749 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:47:50,749 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:47:50,749 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-28 02:47:50,749 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:47:50,750 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:47:50,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1859197125, now seen corresponding path program 1 times [2024-11-28 02:47:50,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:47:50,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561658785] [2024-11-28 02:47:50,750 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:47:50,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:47:50,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:47:50,956 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 02:47:50,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:47:50,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561658785] [2024-11-28 02:47:50,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561658785] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:47:50,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:47:50,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:47:50,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945120856] [2024-11-28 02:47:50,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:47:50,958 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:47:50,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:47:50,958 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:47:50,958 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:47:50,959 INFO L87 Difference]: Start difference. First operand 543 states and 864 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-28 02:47:51,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:47:51,203 INFO L93 Difference]: Finished difference Result 1530 states and 2486 transitions. [2024-11-28 02:47:51,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:47:51,205 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 75 [2024-11-28 02:47:51,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:47:51,216 INFO L225 Difference]: With dead ends: 1530 [2024-11-28 02:47:51,216 INFO L226 Difference]: Without dead ends: 1030 [2024-11-28 02:47:51,220 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:47:51,220 INFO L435 NwaCegarLoop]: 937 mSDtfsCounter, 797 mSDsluCounter, 798 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 797 SdHoareTripleChecker+Valid, 1735 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:47:51,221 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [797 Valid, 1735 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:47:51,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1030 states. [2024-11-28 02:47:51,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1030 to 967. [2024-11-28 02:47:51,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 967 states, 751 states have (on average 1.621837549933422) internal successors, (1218), 777 states have internal predecessors, (1218), 170 states have call successors, (170), 47 states have call predecessors, (170), 45 states have return successors, (175), 157 states have call predecessors, (175), 168 states have call successors, (175) [2024-11-28 02:47:51,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 967 states to 967 states and 1563 transitions. [2024-11-28 02:47:51,299 INFO L78 Accepts]: Start accepts. Automaton has 967 states and 1563 transitions. Word has length 75 [2024-11-28 02:47:51,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:47:51,300 INFO L471 AbstractCegarLoop]: Abstraction has 967 states and 1563 transitions. [2024-11-28 02:47:51,300 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-28 02:47:51,300 INFO L276 IsEmpty]: Start isEmpty. Operand 967 states and 1563 transitions. [2024-11-28 02:47:51,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-11-28 02:47:51,306 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:47:51,306 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:47:51,306 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-28 02:47:51,306 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:47:51,307 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:47:51,307 INFO L85 PathProgramCache]: Analyzing trace with hash -615385540, now seen corresponding path program 1 times [2024-11-28 02:47:51,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:47:51,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101223639] [2024-11-28 02:47:51,307 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:47:51,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:47:51,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:47:51,715 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-28 02:47:51,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:47:51,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101223639] [2024-11-28 02:47:51,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101223639] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:47:51,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1169067054] [2024-11-28 02:47:51,715 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:47:51,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:47:51,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:47:51,721 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:47:51,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 02:47:52,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:47:52,272 INFO L256 TraceCheckSpWp]: Trace formula consists of 1453 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 02:47:52,285 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:47:52,340 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-28 02:47:52,340 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:47:52,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1169067054] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:47:52,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:47:52,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2024-11-28 02:47:52,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387124024] [2024-11-28 02:47:52,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:47:52,342 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:47:52,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:47:52,343 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:47:52,343 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:47:52,343 INFO L87 Difference]: Start difference. First operand 967 states and 1563 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-28 02:47:52,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:47:52,534 INFO L93 Difference]: Finished difference Result 2803 states and 4637 transitions. [2024-11-28 02:47:52,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:47:52,535 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 127 [2024-11-28 02:47:52,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:47:52,562 INFO L225 Difference]: With dead ends: 2803 [2024-11-28 02:47:52,563 INFO L226 Difference]: Without dead ends: 1880 [2024-11-28 02:47:52,571 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:47:52,574 INFO L435 NwaCegarLoop]: 860 mSDtfsCounter, 845 mSDsluCounter, 798 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 845 SdHoareTripleChecker+Valid, 1658 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:47:52,574 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [845 Valid, 1658 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:47:52,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1880 states. [2024-11-28 02:47:52,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1880 to 1868. [2024-11-28 02:47:52,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1868 states, 1453 states have (on average 1.6331727460426704) internal successors, (2373), 1502 states have internal predecessors, (2373), 327 states have call successors, (327), 89 states have call predecessors, (327), 87 states have return successors, (366), 306 states have call predecessors, (366), 323 states have call successors, (366) [2024-11-28 02:47:52,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1868 states to 1868 states and 3066 transitions. [2024-11-28 02:47:52,767 INFO L78 Accepts]: Start accepts. Automaton has 1868 states and 3066 transitions. Word has length 127 [2024-11-28 02:47:52,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:47:52,767 INFO L471 AbstractCegarLoop]: Abstraction has 1868 states and 3066 transitions. [2024-11-28 02:47:52,768 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-28 02:47:52,768 INFO L276 IsEmpty]: Start isEmpty. Operand 1868 states and 3066 transitions. [2024-11-28 02:47:52,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-11-28 02:47:52,774 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:47:52,775 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:47:52,791 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 02:47:52,979 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:47:52,980 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:47:52,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:47:52,981 INFO L85 PathProgramCache]: Analyzing trace with hash -890145154, now seen corresponding path program 1 times [2024-11-28 02:47:52,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:47:52,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693721662] [2024-11-28 02:47:52,981 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:47:52,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:47:53,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:47:53,421 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-28 02:47:53,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:47:53,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693721662] [2024-11-28 02:47:53,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693721662] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:47:53,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1454967518] [2024-11-28 02:47:53,422 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:47:53,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:47:53,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:47:53,425 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:47:53,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 02:47:53,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:47:53,961 INFO L256 TraceCheckSpWp]: Trace formula consists of 1454 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 02:47:53,970 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:47:54,299 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-28 02:47:54,300 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:47:54,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1454967518] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:47:54,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:47:54,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2024-11-28 02:47:54,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40795782] [2024-11-28 02:47:54,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:47:54,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:47:54,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:47:54,304 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:47:54,305 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-28 02:47:54,305 INFO L87 Difference]: Start difference. First operand 1868 states and 3066 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-28 02:47:55,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:47:55,365 INFO L93 Difference]: Finished difference Result 4733 states and 7804 transitions. [2024-11-28 02:47:55,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:47:55,366 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) Word has length 127 [2024-11-28 02:47:55,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:47:55,400 INFO L225 Difference]: With dead ends: 4733 [2024-11-28 02:47:55,401 INFO L226 Difference]: Without dead ends: 2908 [2024-11-28 02:47:55,418 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2024-11-28 02:47:55,419 INFO L435 NwaCegarLoop]: 1127 mSDtfsCounter, 799 mSDsluCounter, 3592 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 801 SdHoareTripleChecker+Valid, 4719 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 02:47:55,419 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [801 Valid, 4719 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 02:47:55,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2908 states. [2024-11-28 02:47:55,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2908 to 2906. [2024-11-28 02:47:55,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2906 states, 2257 states have (on average 1.5999113867966328) internal successors, (3611), 2310 states have internal predecessors, (3611), 501 states have call successors, (501), 151 states have call predecessors, (501), 147 states have return successors, (632), 476 states have call predecessors, (632), 493 states have call successors, (632) [2024-11-28 02:47:55,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2906 states to 2906 states and 4744 transitions. [2024-11-28 02:47:55,696 INFO L78 Accepts]: Start accepts. Automaton has 2906 states and 4744 transitions. Word has length 127 [2024-11-28 02:47:55,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:47:55,698 INFO L471 AbstractCegarLoop]: Abstraction has 2906 states and 4744 transitions. [2024-11-28 02:47:55,699 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-28 02:47:55,699 INFO L276 IsEmpty]: Start isEmpty. Operand 2906 states and 4744 transitions. [2024-11-28 02:47:55,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-28 02:47:55,705 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:47:55,705 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:47:55,719 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 02:47:55,909 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:47:55,910 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:47:55,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:47:55,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1102255217, now seen corresponding path program 1 times [2024-11-28 02:47:55,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:47:55,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51469117] [2024-11-28 02:47:55,911 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:47:55,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:47:55,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:47:56,111 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-28 02:47:56,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:47:56,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51469117] [2024-11-28 02:47:56,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51469117] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:47:56,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [317301748] [2024-11-28 02:47:56,112 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:47:56,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:47:56,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:47:56,116 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:47:56,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 02:47:56,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:47:56,519 INFO L256 TraceCheckSpWp]: Trace formula consists of 1451 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 02:47:56,525 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:47:56,709 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-28 02:47:56,710 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:47:56,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [317301748] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:47:56,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:47:56,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2024-11-28 02:47:56,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064036839] [2024-11-28 02:47:56,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:47:56,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:47:56,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:47:56,712 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:47:56,712 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:47:56,712 INFO L87 Difference]: Start difference. First operand 2906 states and 4744 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-28 02:47:57,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:47:57,970 INFO L93 Difference]: Finished difference Result 5833 states and 9851 transitions. [2024-11-28 02:47:57,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:47:57,971 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 128 [2024-11-28 02:47:57,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:47:58,004 INFO L225 Difference]: With dead ends: 5833 [2024-11-28 02:47:58,005 INFO L226 Difference]: Without dead ends: 2970 [2024-11-28 02:47:58,036 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:47:58,037 INFO L435 NwaCegarLoop]: 825 mSDtfsCounter, 797 mSDsluCounter, 1270 mSDsCounter, 0 mSdLazyCounter, 445 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 801 SdHoareTripleChecker+Valid, 2095 SdHoareTripleChecker+Invalid, 460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-28 02:47:58,037 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [801 Valid, 2095 Invalid, 460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 445 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-28 02:47:58,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2970 states. [2024-11-28 02:47:58,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2970 to 2970. [2024-11-28 02:47:58,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2970 states, 2313 states have (on average 1.6026805015131864) internal successors, (3707), 2366 states have internal predecessors, (3707), 501 states have call successors, (501), 159 states have call predecessors, (501), 155 states have return successors, (640), 476 states have call predecessors, (640), 493 states have call successors, (640) [2024-11-28 02:47:58,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2970 states to 2970 states and 4848 transitions. [2024-11-28 02:47:58,318 INFO L78 Accepts]: Start accepts. Automaton has 2970 states and 4848 transitions. Word has length 128 [2024-11-28 02:47:58,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:47:58,319 INFO L471 AbstractCegarLoop]: Abstraction has 2970 states and 4848 transitions. [2024-11-28 02:47:58,319 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-28 02:47:58,319 INFO L276 IsEmpty]: Start isEmpty. Operand 2970 states and 4848 transitions. [2024-11-28 02:47:58,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-28 02:47:58,327 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:47:58,327 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:47:58,343 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 02:47:58,531 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:47:58,532 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:47:58,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:47:58,533 INFO L85 PathProgramCache]: Analyzing trace with hash -89818223, now seen corresponding path program 1 times [2024-11-28 02:47:58,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:47:58,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952989854] [2024-11-28 02:47:58,533 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:47:58,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:47:58,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:47:58,802 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-28 02:47:58,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:47:58,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952989854] [2024-11-28 02:47:58,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952989854] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:47:58,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2051594672] [2024-11-28 02:47:58,803 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:47:58,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:47:58,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:47:58,807 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:47:58,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 02:47:59,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:47:59,312 INFO L256 TraceCheckSpWp]: Trace formula consists of 1454 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 02:47:59,318 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:47:59,532 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-28 02:47:59,536 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:47:59,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2051594672] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:47:59,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:47:59,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2024-11-28 02:47:59,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289806061] [2024-11-28 02:47:59,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:47:59,537 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:47:59,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:47:59,538 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:47:59,538 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:47:59,538 INFO L87 Difference]: Start difference. First operand 2970 states and 4848 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-28 02:48:00,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:48:00,702 INFO L93 Difference]: Finished difference Result 5961 states and 10035 transitions. [2024-11-28 02:48:00,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:48:00,703 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 131 [2024-11-28 02:48:00,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:48:00,775 INFO L225 Difference]: With dead ends: 5961 [2024-11-28 02:48:00,776 INFO L226 Difference]: Without dead ends: 3034 [2024-11-28 02:48:00,795 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:48:00,796 INFO L435 NwaCegarLoop]: 822 mSDtfsCounter, 784 mSDsluCounter, 1270 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 791 SdHoareTripleChecker+Valid, 2092 SdHoareTripleChecker+Invalid, 460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-28 02:48:00,796 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [791 Valid, 2092 Invalid, 460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 444 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-28 02:48:00,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3034 states. [2024-11-28 02:48:01,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3034 to 3034. [2024-11-28 02:48:01,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3034 states, 2369 states have (on average 1.6053186998733644) internal successors, (3803), 2422 states have internal predecessors, (3803), 501 states have call successors, (501), 167 states have call predecessors, (501), 163 states have return successors, (648), 476 states have call predecessors, (648), 493 states have call successors, (648) [2024-11-28 02:48:01,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3034 states to 3034 states and 4952 transitions. [2024-11-28 02:48:01,164 INFO L78 Accepts]: Start accepts. Automaton has 3034 states and 4952 transitions. Word has length 131 [2024-11-28 02:48:01,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:48:01,165 INFO L471 AbstractCegarLoop]: Abstraction has 3034 states and 4952 transitions. [2024-11-28 02:48:01,167 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-28 02:48:01,168 INFO L276 IsEmpty]: Start isEmpty. Operand 3034 states and 4952 transitions. [2024-11-28 02:48:01,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-11-28 02:48:01,174 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:48:01,176 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:48:01,191 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 02:48:01,379 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:48:01,380 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:48:01,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:48:01,380 INFO L85 PathProgramCache]: Analyzing trace with hash -206002835, now seen corresponding path program 1 times [2024-11-28 02:48:01,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:48:01,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525032209] [2024-11-28 02:48:01,380 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:48:01,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:48:01,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:48:01,630 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-28 02:48:01,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:48:01,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525032209] [2024-11-28 02:48:01,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525032209] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:48:01,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109259794] [2024-11-28 02:48:01,634 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:48:01,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:48:01,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:48:01,637 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:48:01,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 02:48:02,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:48:02,136 INFO L256 TraceCheckSpWp]: Trace formula consists of 1457 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 02:48:02,142 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:48:02,346 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-28 02:48:02,348 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:48:02,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1109259794] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:48:02,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:48:02,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2024-11-28 02:48:02,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095028875] [2024-11-28 02:48:02,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:48:02,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:48:02,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:48:02,352 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:48:02,352 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:48:02,352 INFO L87 Difference]: Start difference. First operand 3034 states and 4952 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-28 02:48:03,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:48:03,514 INFO L93 Difference]: Finished difference Result 6089 states and 10219 transitions. [2024-11-28 02:48:03,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:48:03,515 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 134 [2024-11-28 02:48:03,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:48:03,560 INFO L225 Difference]: With dead ends: 6089 [2024-11-28 02:48:03,560 INFO L226 Difference]: Without dead ends: 3098 [2024-11-28 02:48:03,583 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:48:03,584 INFO L435 NwaCegarLoop]: 819 mSDtfsCounter, 777 mSDsluCounter, 1270 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 787 SdHoareTripleChecker+Valid, 2089 SdHoareTripleChecker+Invalid, 460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-28 02:48:03,584 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [787 Valid, 2089 Invalid, 460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-28 02:48:03,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3098 states. [2024-11-28 02:48:03,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3098 to 3098. [2024-11-28 02:48:03,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3098 states, 2425 states have (on average 1.6078350515463917) internal successors, (3899), 2478 states have internal predecessors, (3899), 501 states have call successors, (501), 175 states have call predecessors, (501), 171 states have return successors, (656), 476 states have call predecessors, (656), 493 states have call successors, (656) [2024-11-28 02:48:03,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3098 states to 3098 states and 5056 transitions. [2024-11-28 02:48:03,841 INFO L78 Accepts]: Start accepts. Automaton has 3098 states and 5056 transitions. Word has length 134 [2024-11-28 02:48:03,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:48:03,842 INFO L471 AbstractCegarLoop]: Abstraction has 3098 states and 5056 transitions. [2024-11-28 02:48:03,842 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-28 02:48:03,842 INFO L276 IsEmpty]: Start isEmpty. Operand 3098 states and 5056 transitions. [2024-11-28 02:48:03,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2024-11-28 02:48:03,849 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:48:03,849 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:48:03,866 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 02:48:04,050 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:48:04,050 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:48:04,051 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:48:04,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1764999291, now seen corresponding path program 1 times [2024-11-28 02:48:04,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:48:04,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597329795] [2024-11-28 02:48:04,051 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:48:04,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:48:04,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:48:04,326 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-28 02:48:04,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:48:04,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597329795] [2024-11-28 02:48:04,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597329795] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:48:04,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030761824] [2024-11-28 02:48:04,327 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:48:04,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:48:04,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:48:04,330 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:48:04,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 02:48:04,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:48:04,788 INFO L256 TraceCheckSpWp]: Trace formula consists of 1460 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 02:48:04,794 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:48:04,984 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-28 02:48:04,984 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:48:04,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2030761824] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:48:04,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:48:04,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2024-11-28 02:48:04,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393099983] [2024-11-28 02:48:04,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:48:04,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:48:04,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:48:04,987 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:48:04,987 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:48:04,987 INFO L87 Difference]: Start difference. First operand 3098 states and 5056 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-28 02:48:06,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:48:06,043 INFO L93 Difference]: Finished difference Result 6217 states and 10403 transitions. [2024-11-28 02:48:06,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:48:06,044 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 137 [2024-11-28 02:48:06,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:48:06,082 INFO L225 Difference]: With dead ends: 6217 [2024-11-28 02:48:06,082 INFO L226 Difference]: Without dead ends: 3162 [2024-11-28 02:48:06,104 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:48:06,105 INFO L435 NwaCegarLoop]: 816 mSDtfsCounter, 766 mSDsluCounter, 1270 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 779 SdHoareTripleChecker+Valid, 2086 SdHoareTripleChecker+Invalid, 460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 02:48:06,106 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [779 Valid, 2086 Invalid, 460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 02:48:06,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3162 states. [2024-11-28 02:48:06,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3162 to 3162. [2024-11-28 02:48:06,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3162 states, 2481 states have (on average 1.6102378073357517) internal successors, (3995), 2534 states have internal predecessors, (3995), 501 states have call successors, (501), 183 states have call predecessors, (501), 179 states have return successors, (664), 476 states have call predecessors, (664), 493 states have call successors, (664) [2024-11-28 02:48:06,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3162 states to 3162 states and 5160 transitions. [2024-11-28 02:48:06,361 INFO L78 Accepts]: Start accepts. Automaton has 3162 states and 5160 transitions. Word has length 137 [2024-11-28 02:48:06,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:48:06,362 INFO L471 AbstractCegarLoop]: Abstraction has 3162 states and 5160 transitions. [2024-11-28 02:48:06,362 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-28 02:48:06,362 INFO L276 IsEmpty]: Start isEmpty. Operand 3162 states and 5160 transitions. [2024-11-28 02:48:06,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-28 02:48:06,369 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:48:06,369 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:48:06,383 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 02:48:06,573 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:48:06,574 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:48:06,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:48:06,575 INFO L85 PathProgramCache]: Analyzing trace with hash 2109555304, now seen corresponding path program 1 times [2024-11-28 02:48:06,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:48:06,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840140287] [2024-11-28 02:48:06,575 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:48:06,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:48:06,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:48:06,775 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-28 02:48:06,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:48:06,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840140287] [2024-11-28 02:48:06,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840140287] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:48:06,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1362788710] [2024-11-28 02:48:06,775 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:48:06,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:48:06,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:48:06,780 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:48:06,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 02:48:07,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:48:07,250 INFO L256 TraceCheckSpWp]: Trace formula consists of 1460 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 02:48:07,255 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:48:07,439 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-28 02:48:07,439 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:48:07,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1362788710] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:48:07,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:48:07,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-28 02:48:07,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729732252] [2024-11-28 02:48:07,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:48:07,441 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:48:07,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:48:07,442 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:48:07,442 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:48:07,443 INFO L87 Difference]: Start difference. First operand 3162 states and 5160 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-28 02:48:08,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:48:08,555 INFO L93 Difference]: Finished difference Result 6297 states and 10619 transitions. [2024-11-28 02:48:08,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:48:08,556 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 140 [2024-11-28 02:48:08,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:48:08,616 INFO L225 Difference]: With dead ends: 6297 [2024-11-28 02:48:08,616 INFO L226 Difference]: Without dead ends: 3178 [2024-11-28 02:48:08,645 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:48:08,648 INFO L435 NwaCegarLoop]: 816 mSDtfsCounter, 762 mSDsluCounter, 1270 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 775 SdHoareTripleChecker+Valid, 2086 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 02:48:08,650 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [775 Valid, 2086 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 439 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 02:48:08,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3178 states. [2024-11-28 02:48:08,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3178 to 3178. [2024-11-28 02:48:08,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3178 states, 2489 states have (on average 1.5954198473282444) internal successors, (3971), 2550 states have internal predecessors, (3971), 501 states have call successors, (501), 183 states have call predecessors, (501), 187 states have return successors, (672), 476 states have call predecessors, (672), 493 states have call successors, (672) [2024-11-28 02:48:08,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3178 states to 3178 states and 5144 transitions. [2024-11-28 02:48:08,884 INFO L78 Accepts]: Start accepts. Automaton has 3178 states and 5144 transitions. Word has length 140 [2024-11-28 02:48:08,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:48:08,884 INFO L471 AbstractCegarLoop]: Abstraction has 3178 states and 5144 transitions. [2024-11-28 02:48:08,885 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-28 02:48:08,885 INFO L276 IsEmpty]: Start isEmpty. Operand 3178 states and 5144 transitions. [2024-11-28 02:48:08,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-28 02:48:08,892 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:48:08,892 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:48:08,907 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-28 02:48:09,096 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:48:09,097 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:48:09,098 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:48:09,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1624127383, now seen corresponding path program 1 times [2024-11-28 02:48:09,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:48:09,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247566368] [2024-11-28 02:48:09,099 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:48:09,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:48:09,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:48:09,628 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-28 02:48:09,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:48:09,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247566368] [2024-11-28 02:48:09,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247566368] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:48:09,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2147437722] [2024-11-28 02:48:09,629 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:48:09,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:48:09,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:48:09,632 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:48:09,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 02:48:10,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:48:10,078 INFO L256 TraceCheckSpWp]: Trace formula consists of 1463 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-28 02:48:10,085 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:48:10,380 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:48:10,382 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:48:10,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2147437722] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:48:10,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:48:10,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2024-11-28 02:48:10,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995741558] [2024-11-28 02:48:10,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:48:10,385 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:48:10,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:48:10,386 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:48:10,386 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2024-11-28 02:48:10,386 INFO L87 Difference]: Start difference. First operand 3178 states and 5144 transitions. Second operand has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 6 states have call successors, (17), 5 states have call predecessors, (17), 5 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2024-11-28 02:48:13,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:48:13,541 INFO L93 Difference]: Finished difference Result 6569 states and 10653 transitions. [2024-11-28 02:48:13,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:48:13,542 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 6 states have call successors, (17), 5 states have call predecessors, (17), 5 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) Word has length 140 [2024-11-28 02:48:13,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:48:13,578 INFO L225 Difference]: With dead ends: 6569 [2024-11-28 02:48:13,579 INFO L226 Difference]: Without dead ends: 3439 [2024-11-28 02:48:13,596 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2024-11-28 02:48:13,597 INFO L435 NwaCegarLoop]: 406 mSDtfsCounter, 1724 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 1722 mSolverCounterSat, 420 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1831 SdHoareTripleChecker+Valid, 927 SdHoareTripleChecker+Invalid, 2142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 420 IncrementalHoareTripleChecker+Valid, 1722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-28 02:48:13,598 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1831 Valid, 927 Invalid, 2142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [420 Valid, 1722 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-28 02:48:13,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3439 states. [2024-11-28 02:48:13,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3439 to 3177. [2024-11-28 02:48:13,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3177 states, 2383 states have (on average 1.5547629039026438) internal successors, (3705), 2482 states have internal predecessors, (3705), 606 states have call successors, (606), 169 states have call predecessors, (606), 187 states have return successors, (754), 577 states have call predecessors, (754), 598 states have call successors, (754) [2024-11-28 02:48:13,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3177 states to 3177 states and 5065 transitions. [2024-11-28 02:48:13,858 INFO L78 Accepts]: Start accepts. Automaton has 3177 states and 5065 transitions. Word has length 140 [2024-11-28 02:48:13,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:48:13,859 INFO L471 AbstractCegarLoop]: Abstraction has 3177 states and 5065 transitions. [2024-11-28 02:48:13,859 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 6 states have call successors, (17), 5 states have call predecessors, (17), 5 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2024-11-28 02:48:13,859 INFO L276 IsEmpty]: Start isEmpty. Operand 3177 states and 5065 transitions. [2024-11-28 02:48:13,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-28 02:48:13,866 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:48:13,867 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:48:13,882 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-28 02:48:14,070 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:48:14,071 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:48:14,073 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:48:14,073 INFO L85 PathProgramCache]: Analyzing trace with hash -892159957, now seen corresponding path program 1 times [2024-11-28 02:48:14,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:48:14,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512592920] [2024-11-28 02:48:14,074 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:48:14,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:48:14,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:48:14,592 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-28 02:48:14,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:48:14,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512592920] [2024-11-28 02:48:14,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512592920] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:48:14,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [739871202] [2024-11-28 02:48:14,593 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:48:14,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:48:14,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:48:14,596 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:48:14,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 02:48:15,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:48:15,061 INFO L256 TraceCheckSpWp]: Trace formula consists of 1466 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-28 02:48:15,067 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:48:15,322 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-28 02:48:15,322 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:48:15,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [739871202] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:48:15,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:48:15,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2024-11-28 02:48:15,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598707133] [2024-11-28 02:48:15,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:48:15,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 02:48:15,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:48:15,324 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 02:48:15,324 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2024-11-28 02:48:15,324 INFO L87 Difference]: Start difference. First operand 3177 states and 5065 transitions. Second operand has 8 states, 8 states have (on average 12.125) internal successors, (97), 8 states have internal predecessors, (97), 6 states have call successors, (16), 4 states have call predecessors, (16), 5 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) [2024-11-28 02:48:21,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:48:21,493 INFO L93 Difference]: Finished difference Result 7407 states and 11889 transitions. [2024-11-28 02:48:21,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-28 02:48:21,494 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 8 states have internal predecessors, (97), 6 states have call successors, (16), 4 states have call predecessors, (16), 5 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) Word has length 140 [2024-11-28 02:48:21,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:48:21,531 INFO L225 Difference]: With dead ends: 7407 [2024-11-28 02:48:21,531 INFO L226 Difference]: Without dead ends: 4271 [2024-11-28 02:48:21,550 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=95, Invalid=661, Unknown=0, NotChecked=0, Total=756 [2024-11-28 02:48:21,551 INFO L435 NwaCegarLoop]: 397 mSDtfsCounter, 2363 mSDsluCounter, 1745 mSDsCounter, 0 mSdLazyCounter, 4862 mSolverCounterSat, 542 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2457 SdHoareTripleChecker+Valid, 2142 SdHoareTripleChecker+Invalid, 5404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 542 IncrementalHoareTripleChecker+Valid, 4862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2024-11-28 02:48:21,552 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2457 Valid, 2142 Invalid, 5404 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [542 Valid, 4862 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2024-11-28 02:48:21,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4271 states. [2024-11-28 02:48:21,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4271 to 3703. [2024-11-28 02:48:21,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3703 states, 2775 states have (on average 1.552072072072072) internal successors, (4307), 2896 states have internal predecessors, (4307), 696 states have call successors, (696), 191 states have call predecessors, (696), 231 states have return successors, (899), 667 states have call predecessors, (899), 688 states have call successors, (899) [2024-11-28 02:48:21,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3703 states to 3703 states and 5902 transitions. [2024-11-28 02:48:21,898 INFO L78 Accepts]: Start accepts. Automaton has 3703 states and 5902 transitions. Word has length 140 [2024-11-28 02:48:21,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:48:21,899 INFO L471 AbstractCegarLoop]: Abstraction has 3703 states and 5902 transitions. [2024-11-28 02:48:21,899 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 8 states have internal predecessors, (97), 6 states have call successors, (16), 4 states have call predecessors, (16), 5 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) [2024-11-28 02:48:21,899 INFO L276 IsEmpty]: Start isEmpty. Operand 3703 states and 5902 transitions. [2024-11-28 02:48:21,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-11-28 02:48:21,907 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:48:21,908 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:48:21,924 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-28 02:48:22,112 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-28 02:48:22,113 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:48:22,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:48:22,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1289677077, now seen corresponding path program 1 times [2024-11-28 02:48:22,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:48:22,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638191120] [2024-11-28 02:48:22,115 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:48:22,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:48:22,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:48:22,656 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-28 02:48:22,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:48:22,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638191120] [2024-11-28 02:48:22,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638191120] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:48:22,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1764165541] [2024-11-28 02:48:22,657 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:48:22,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:48:22,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:48:22,660 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:48:22,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 02:48:23,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:48:23,152 INFO L256 TraceCheckSpWp]: Trace formula consists of 1462 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-28 02:48:23,159 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:48:23,404 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-28 02:48:23,404 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:48:23,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1764165541] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:48:23,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:48:23,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2024-11-28 02:48:23,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590064942] [2024-11-28 02:48:23,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:48:23,406 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 02:48:23,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:48:23,407 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 02:48:23,407 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2024-11-28 02:48:23,407 INFO L87 Difference]: Start difference. First operand 3703 states and 5902 transitions. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 4 states have call successors, (17), 4 states have call predecessors, (17), 5 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-28 02:48:29,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:48:29,704 INFO L93 Difference]: Finished difference Result 10109 states and 16438 transitions. [2024-11-28 02:48:29,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-28 02:48:29,705 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 4 states have call successors, (17), 4 states have call predecessors, (17), 5 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) Word has length 142 [2024-11-28 02:48:29,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:48:29,753 INFO L225 Difference]: With dead ends: 10109 [2024-11-28 02:48:29,754 INFO L226 Difference]: Without dead ends: 6451 [2024-11-28 02:48:29,774 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=100, Invalid=656, Unknown=0, NotChecked=0, Total=756 [2024-11-28 02:48:29,775 INFO L435 NwaCegarLoop]: 571 mSDtfsCounter, 2679 mSDsluCounter, 1576 mSDsCounter, 0 mSdLazyCounter, 5886 mSolverCounterSat, 678 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2779 SdHoareTripleChecker+Valid, 2147 SdHoareTripleChecker+Invalid, 6564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 678 IncrementalHoareTripleChecker+Valid, 5886 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2024-11-28 02:48:29,776 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2779 Valid, 2147 Invalid, 6564 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [678 Valid, 5886 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2024-11-28 02:48:29,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6451 states. [2024-11-28 02:48:30,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6451 to 5841. [2024-11-28 02:48:30,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5841 states, 4380 states have (on average 1.55) internal successors, (6789), 4578 states have internal predecessors, (6789), 1084 states have call successors, (1084), 291 states have call predecessors, (1084), 376 states have return successors, (1520), 1048 states have call predecessors, (1520), 1076 states have call successors, (1520) [2024-11-28 02:48:30,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5841 states to 5841 states and 9393 transitions. [2024-11-28 02:48:30,279 INFO L78 Accepts]: Start accepts. Automaton has 5841 states and 9393 transitions. Word has length 142 [2024-11-28 02:48:30,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:48:30,280 INFO L471 AbstractCegarLoop]: Abstraction has 5841 states and 9393 transitions. [2024-11-28 02:48:30,280 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 4 states have call successors, (17), 4 states have call predecessors, (17), 5 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-28 02:48:30,280 INFO L276 IsEmpty]: Start isEmpty. Operand 5841 states and 9393 transitions. [2024-11-28 02:48:30,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-28 02:48:30,287 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:48:30,287 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:48:30,302 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-28 02:48:30,488 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-28 02:48:30,489 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:48:30,490 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:48:30,490 INFO L85 PathProgramCache]: Analyzing trace with hash -930410229, now seen corresponding path program 1 times [2024-11-28 02:48:30,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:48:30,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720493720] [2024-11-28 02:48:30,490 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:48:30,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:48:30,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:48:30,971 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-28 02:48:30,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:48:30,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720493720] [2024-11-28 02:48:30,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720493720] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:48:30,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237382210] [2024-11-28 02:48:30,972 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:48:30,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:48:30,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:48:30,974 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:48:30,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 02:48:31,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:48:31,436 INFO L256 TraceCheckSpWp]: Trace formula consists of 1479 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 02:48:31,440 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:48:31,464 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-28 02:48:31,464 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:48:31,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [237382210] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:48:31,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:48:31,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2024-11-28 02:48:31,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42222984] [2024-11-28 02:48:31,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:48:31,466 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:48:31,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:48:31,466 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:48:31,466 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-28 02:48:31,467 INFO L87 Difference]: Start difference. First operand 5841 states and 9393 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-28 02:48:31,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:48:31,859 INFO L93 Difference]: Finished difference Result 13792 states and 22465 transitions. [2024-11-28 02:48:31,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:48:31,860 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 147 [2024-11-28 02:48:31,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:48:31,934 INFO L225 Difference]: With dead ends: 13792 [2024-11-28 02:48:31,934 INFO L226 Difference]: Without dead ends: 8000 [2024-11-28 02:48:31,968 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-28 02:48:31,969 INFO L435 NwaCegarLoop]: 1538 mSDtfsCounter, 807 mSDsluCounter, 835 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 807 SdHoareTripleChecker+Valid, 2373 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:48:31,969 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [807 Valid, 2373 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:48:31,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8000 states. [2024-11-28 02:48:32,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8000 to 5829. [2024-11-28 02:48:32,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5829 states, 4372 states have (on average 1.5491765782250686) internal successors, (6773), 4566 states have internal predecessors, (6773), 1084 states have call successors, (1084), 291 states have call predecessors, (1084), 372 states have return successors, (1484), 1048 states have call predecessors, (1484), 1076 states have call successors, (1484) [2024-11-28 02:48:32,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5829 states to 5829 states and 9341 transitions. [2024-11-28 02:48:32,734 INFO L78 Accepts]: Start accepts. Automaton has 5829 states and 9341 transitions. Word has length 147 [2024-11-28 02:48:32,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:48:32,735 INFO L471 AbstractCegarLoop]: Abstraction has 5829 states and 9341 transitions. [2024-11-28 02:48:32,736 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-28 02:48:32,737 INFO L276 IsEmpty]: Start isEmpty. Operand 5829 states and 9341 transitions. [2024-11-28 02:48:32,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-28 02:48:32,745 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:48:32,745 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:48:32,759 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-28 02:48:32,946 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-28 02:48:32,946 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:48:32,946 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:48:32,947 INFO L85 PathProgramCache]: Analyzing trace with hash -270878707, now seen corresponding path program 1 times [2024-11-28 02:48:32,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:48:32,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662694380] [2024-11-28 02:48:32,947 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:48:32,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:48:32,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:48:33,417 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-28 02:48:33,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:48:33,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662694380] [2024-11-28 02:48:33,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662694380] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:48:33,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1432523448] [2024-11-28 02:48:33,418 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:48:33,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:48:33,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:48:33,420 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:48:33,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 02:48:33,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:48:33,887 INFO L256 TraceCheckSpWp]: Trace formula consists of 1478 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-28 02:48:33,899 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:48:34,117 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-28 02:48:34,118 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:48:34,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1432523448] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:48:34,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:48:34,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2024-11-28 02:48:34,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353421355] [2024-11-28 02:48:34,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:48:34,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:48:34,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:48:34,120 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:48:34,121 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2024-11-28 02:48:34,121 INFO L87 Difference]: Start difference. First operand 5829 states and 9341 transitions. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 5 states have internal predecessors, (98), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-28 02:48:34,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:48:34,631 INFO L93 Difference]: Finished difference Result 5831 states and 9342 transitions. [2024-11-28 02:48:34,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:48:34,632 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 5 states have internal predecessors, (98), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) Word has length 147 [2024-11-28 02:48:34,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:48:34,688 INFO L225 Difference]: With dead ends: 5831 [2024-11-28 02:48:34,688 INFO L226 Difference]: Without dead ends: 5829 [2024-11-28 02:48:34,696 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2024-11-28 02:48:34,697 INFO L435 NwaCegarLoop]: 929 mSDtfsCounter, 353 mSDsluCounter, 2787 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 3716 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:48:34,697 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 3716 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 02:48:34,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5829 states. [2024-11-28 02:48:35,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5829 to 5829. [2024-11-28 02:48:35,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5829 states, 4372 states have (on average 1.5425434583714548) internal successors, (6744), 4566 states have internal predecessors, (6744), 1084 states have call successors, (1084), 291 states have call predecessors, (1084), 372 states have return successors, (1484), 1048 states have call predecessors, (1484), 1076 states have call successors, (1484) [2024-11-28 02:48:35,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5829 states to 5829 states and 9312 transitions. [2024-11-28 02:48:35,243 INFO L78 Accepts]: Start accepts. Automaton has 5829 states and 9312 transitions. Word has length 147 [2024-11-28 02:48:35,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:48:35,244 INFO L471 AbstractCegarLoop]: Abstraction has 5829 states and 9312 transitions. [2024-11-28 02:48:35,244 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 5 states have internal predecessors, (98), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-28 02:48:35,244 INFO L276 IsEmpty]: Start isEmpty. Operand 5829 states and 9312 transitions. [2024-11-28 02:48:35,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-11-28 02:48:35,253 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:48:35,253 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:48:35,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-28 02:48:35,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-28 02:48:35,458 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:48:35,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:48:35,459 INFO L85 PathProgramCache]: Analyzing trace with hash 969149556, now seen corresponding path program 1 times [2024-11-28 02:48:35,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:48:35,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452114716] [2024-11-28 02:48:35,459 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:48:35,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:48:35,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:48:35,907 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2024-11-28 02:48:35,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:48:35,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452114716] [2024-11-28 02:48:35,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452114716] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:48:35,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1964769628] [2024-11-28 02:48:35,908 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:48:35,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:48:35,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:48:35,911 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:48:35,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-28 02:48:36,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:48:36,364 INFO L256 TraceCheckSpWp]: Trace formula consists of 1570 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 02:48:36,370 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:48:36,425 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-28 02:48:36,425 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:48:36,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1964769628] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:48:36,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:48:36,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2024-11-28 02:48:36,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892761272] [2024-11-28 02:48:36,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:48:36,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:48:36,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:48:36,428 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:48:36,428 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-28 02:48:36,429 INFO L87 Difference]: Start difference. First operand 5829 states and 9312 transitions. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-28 02:48:37,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:48:37,108 INFO L93 Difference]: Finished difference Result 11883 states and 19234 transitions. [2024-11-28 02:48:37,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:48:37,109 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 170 [2024-11-28 02:48:37,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:48:37,153 INFO L225 Difference]: With dead ends: 11883 [2024-11-28 02:48:37,153 INFO L226 Difference]: Without dead ends: 6099 [2024-11-28 02:48:37,185 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-11-28 02:48:37,185 INFO L435 NwaCegarLoop]: 783 mSDtfsCounter, 144 mSDsluCounter, 1543 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 2326 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:48:37,186 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 2326 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 02:48:37,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6099 states. [2024-11-28 02:48:37,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6099 to 6063. [2024-11-28 02:48:37,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6063 states, 4600 states have (on average 1.5613043478260868) internal successors, (7182), 4794 states have internal predecessors, (7182), 1084 states have call successors, (1084), 297 states have call predecessors, (1084), 378 states have return successors, (1484), 1048 states have call predecessors, (1484), 1076 states have call successors, (1484) [2024-11-28 02:48:37,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6063 states to 6063 states and 9750 transitions. [2024-11-28 02:48:37,669 INFO L78 Accepts]: Start accepts. Automaton has 6063 states and 9750 transitions. Word has length 170 [2024-11-28 02:48:37,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:48:37,670 INFO L471 AbstractCegarLoop]: Abstraction has 6063 states and 9750 transitions. [2024-11-28 02:48:37,670 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-28 02:48:37,671 INFO L276 IsEmpty]: Start isEmpty. Operand 6063 states and 9750 transitions. [2024-11-28 02:48:37,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-11-28 02:48:37,679 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:48:37,680 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:48:37,694 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-28 02:48:37,880 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-28 02:48:37,881 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:48:37,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:48:37,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1576282692, now seen corresponding path program 1 times [2024-11-28 02:48:37,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:48:37,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414539946] [2024-11-28 02:48:37,882 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:48:37,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:48:37,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:48:38,466 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2024-11-28 02:48:38,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:48:38,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414539946] [2024-11-28 02:48:38,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414539946] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:48:38,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675566231] [2024-11-28 02:48:38,468 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:48:38,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:48:38,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:48:38,471 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:48:38,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-28 02:48:38,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:48:38,998 INFO L256 TraceCheckSpWp]: Trace formula consists of 1575 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 02:48:39,005 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:48:39,061 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-28 02:48:39,061 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:48:39,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [675566231] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:48:39,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:48:39,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2024-11-28 02:48:39,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324832740] [2024-11-28 02:48:39,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:48:39,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:48:39,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:48:39,063 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:48:39,063 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-28 02:48:39,064 INFO L87 Difference]: Start difference. First operand 6063 states and 9750 transitions. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-28 02:48:39,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:48:39,788 INFO L93 Difference]: Finished difference Result 12369 states and 20110 transitions. [2024-11-28 02:48:39,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:48:39,789 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 175 [2024-11-28 02:48:39,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:48:39,861 INFO L225 Difference]: With dead ends: 12369 [2024-11-28 02:48:39,862 INFO L226 Difference]: Without dead ends: 6351 [2024-11-28 02:48:39,911 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-11-28 02:48:39,912 INFO L435 NwaCegarLoop]: 782 mSDtfsCounter, 142 mSDsluCounter, 1541 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 2323 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:48:39,912 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 2323 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 02:48:39,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6351 states. [2024-11-28 02:48:40,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6351 to 6297. [2024-11-28 02:48:40,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6297 states, 4828 states have (on average 1.5782932891466446) internal successors, (7620), 5022 states have internal predecessors, (7620), 1084 states have call successors, (1084), 303 states have call predecessors, (1084), 384 states have return successors, (1484), 1048 states have call predecessors, (1484), 1076 states have call successors, (1484) [2024-11-28 02:48:40,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6297 states to 6297 states and 10188 transitions. [2024-11-28 02:48:40,662 INFO L78 Accepts]: Start accepts. Automaton has 6297 states and 10188 transitions. Word has length 175 [2024-11-28 02:48:40,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:48:40,663 INFO L471 AbstractCegarLoop]: Abstraction has 6297 states and 10188 transitions. [2024-11-28 02:48:40,663 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-28 02:48:40,663 INFO L276 IsEmpty]: Start isEmpty. Operand 6297 states and 10188 transitions. [2024-11-28 02:48:40,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-11-28 02:48:40,673 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:48:40,673 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:48:40,688 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-28 02:48:40,873 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-28 02:48:40,874 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:48:40,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:48:40,875 INFO L85 PathProgramCache]: Analyzing trace with hash 349525748, now seen corresponding path program 1 times [2024-11-28 02:48:40,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:48:40,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743269997] [2024-11-28 02:48:40,875 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:48:40,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:48:40,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:48:41,350 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-11-28 02:48:41,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:48:41,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743269997] [2024-11-28 02:48:41,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743269997] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:48:41,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [553365878] [2024-11-28 02:48:41,351 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:48:41,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:48:41,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:48:41,354 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:48:41,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-28 02:48:41,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:48:41,814 INFO L256 TraceCheckSpWp]: Trace formula consists of 1579 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 02:48:41,818 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:48:41,865 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-28 02:48:41,865 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:48:41,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [553365878] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:48:41,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:48:41,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2024-11-28 02:48:41,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127980259] [2024-11-28 02:48:41,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:48:41,866 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:48:41,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:48:41,868 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:48:41,868 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-28 02:48:41,868 INFO L87 Difference]: Start difference. First operand 6297 states and 10188 transitions. Second operand has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-28 02:48:42,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:48:42,482 INFO L93 Difference]: Finished difference Result 12855 states and 20986 transitions. [2024-11-28 02:48:42,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:48:42,482 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 179 [2024-11-28 02:48:42,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:48:42,545 INFO L225 Difference]: With dead ends: 12855 [2024-11-28 02:48:42,545 INFO L226 Difference]: Without dead ends: 6603 [2024-11-28 02:48:42,579 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-11-28 02:48:42,580 INFO L435 NwaCegarLoop]: 781 mSDtfsCounter, 140 mSDsluCounter, 1539 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 2320 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:48:42,581 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 2320 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 02:48:42,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6603 states. [2024-11-28 02:48:42,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6603 to 6531. [2024-11-28 02:48:43,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6531 states, 5056 states have (on average 1.59375) internal successors, (8058), 5250 states have internal predecessors, (8058), 1084 states have call successors, (1084), 309 states have call predecessors, (1084), 390 states have return successors, (1484), 1048 states have call predecessors, (1484), 1076 states have call successors, (1484) [2024-11-28 02:48:43,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6531 states to 6531 states and 10626 transitions. [2024-11-28 02:48:43,064 INFO L78 Accepts]: Start accepts. Automaton has 6531 states and 10626 transitions. Word has length 179 [2024-11-28 02:48:43,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:48:43,064 INFO L471 AbstractCegarLoop]: Abstraction has 6531 states and 10626 transitions. [2024-11-28 02:48:43,064 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-28 02:48:43,065 INFO L276 IsEmpty]: Start isEmpty. Operand 6531 states and 10626 transitions. [2024-11-28 02:48:43,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2024-11-28 02:48:43,072 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:48:43,072 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:48:43,086 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-28 02:48:43,273 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:48:43,273 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:48:43,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:48:43,274 INFO L85 PathProgramCache]: Analyzing trace with hash 139622484, now seen corresponding path program 1 times [2024-11-28 02:48:43,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:48:43,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669545083] [2024-11-28 02:48:43,274 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:48:43,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:48:43,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:48:43,772 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2024-11-28 02:48:43,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:48:43,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669545083] [2024-11-28 02:48:43,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669545083] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:48:43,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2056363640] [2024-11-28 02:48:43,773 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:48:43,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:48:43,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:48:43,778 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:48:43,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-28 02:48:44,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:48:44,241 INFO L256 TraceCheckSpWp]: Trace formula consists of 1582 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 02:48:44,246 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:48:44,306 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-28 02:48:44,306 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:48:44,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2056363640] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:48:44,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:48:44,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2024-11-28 02:48:44,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646625785] [2024-11-28 02:48:44,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:48:44,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:48:44,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:48:44,308 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:48:44,309 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-28 02:48:44,309 INFO L87 Difference]: Start difference. First operand 6531 states and 10626 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-28 02:48:45,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:48:45,045 INFO L93 Difference]: Finished difference Result 13341 states and 21862 transitions. [2024-11-28 02:48:45,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:48:45,046 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 182 [2024-11-28 02:48:45,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:48:45,113 INFO L225 Difference]: With dead ends: 13341 [2024-11-28 02:48:45,114 INFO L226 Difference]: Without dead ends: 6855 [2024-11-28 02:48:45,153 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-11-28 02:48:45,154 INFO L435 NwaCegarLoop]: 778 mSDtfsCounter, 138 mSDsluCounter, 1532 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 2310 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:48:45,155 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 2310 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 02:48:45,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6855 states. [2024-11-28 02:48:45,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6855 to 6765. [2024-11-28 02:48:45,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6765 states, 5284 states have (on average 1.607872823618471) internal successors, (8496), 5478 states have internal predecessors, (8496), 1084 states have call successors, (1084), 315 states have call predecessors, (1084), 396 states have return successors, (1484), 1048 states have call predecessors, (1484), 1076 states have call successors, (1484) [2024-11-28 02:48:45,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6765 states to 6765 states and 11064 transitions. [2024-11-28 02:48:45,670 INFO L78 Accepts]: Start accepts. Automaton has 6765 states and 11064 transitions. Word has length 182 [2024-11-28 02:48:45,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:48:45,670 INFO L471 AbstractCegarLoop]: Abstraction has 6765 states and 11064 transitions. [2024-11-28 02:48:45,671 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-28 02:48:45,671 INFO L276 IsEmpty]: Start isEmpty. Operand 6765 states and 11064 transitions. [2024-11-28 02:48:45,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2024-11-28 02:48:45,678 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:48:45,679 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:48:45,693 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-28 02:48:45,879 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:48:45,880 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:48:45,880 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:48:45,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1188392126, now seen corresponding path program 1 times [2024-11-28 02:48:45,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:48:45,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265287445] [2024-11-28 02:48:45,881 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:48:45,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:48:45,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:48:46,249 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2024-11-28 02:48:46,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:48:46,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265287445] [2024-11-28 02:48:46,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265287445] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:48:46,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252247] [2024-11-28 02:48:46,250 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:48:46,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:48:46,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:48:46,253 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:48:46,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-28 02:48:46,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:48:46,725 INFO L256 TraceCheckSpWp]: Trace formula consists of 1578 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-28 02:48:46,733 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:48:46,967 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-11-28 02:48:46,968 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:48:46,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [252247] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:48:46,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:48:46,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 15 [2024-11-28 02:48:46,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290865521] [2024-11-28 02:48:46,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:48:46,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 02:48:46,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:48:46,970 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 02:48:46,970 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2024-11-28 02:48:46,971 INFO L87 Difference]: Start difference. First operand 6765 states and 11064 transitions. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 7 states have internal predecessors, (123), 4 states have call successors, (20), 4 states have call predecessors, (20), 6 states have return successors, (19), 6 states have call predecessors, (19), 4 states have call successors, (19) [2024-11-28 02:48:50,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:48:50,349 INFO L93 Difference]: Finished difference Result 21055 states and 35016 transitions. [2024-11-28 02:48:50,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 02:48:50,349 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 7 states have internal predecessors, (123), 4 states have call successors, (20), 4 states have call predecessors, (20), 6 states have return successors, (19), 6 states have call predecessors, (19), 4 states have call successors, (19) Word has length 184 [2024-11-28 02:48:50,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:48:50,452 INFO L225 Difference]: With dead ends: 21055 [2024-11-28 02:48:50,452 INFO L226 Difference]: Without dead ends: 11039 [2024-11-28 02:48:50,514 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=426, Unknown=0, NotChecked=0, Total=506 [2024-11-28 02:48:50,515 INFO L435 NwaCegarLoop]: 405 mSDtfsCounter, 1890 mSDsluCounter, 1973 mSDsCounter, 0 mSdLazyCounter, 3856 mSolverCounterSat, 467 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1989 SdHoareTripleChecker+Valid, 2378 SdHoareTripleChecker+Invalid, 4323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 467 IncrementalHoareTripleChecker+Valid, 3856 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-28 02:48:50,515 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1989 Valid, 2378 Invalid, 4323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [467 Valid, 3856 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-28 02:48:50,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11039 states. [2024-11-28 02:48:51,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11039 to 10922. [2024-11-28 02:48:51,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10922 states, 8426 states have (on average 1.6052694042250177) internal successors, (13526), 8797 states have internal predecessors, (13526), 1815 states have call successors, (1815), 497 states have call predecessors, (1815), 680 states have return successors, (2553), 1776 states have call predecessors, (2553), 1807 states have call successors, (2553) [2024-11-28 02:48:51,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10922 states to 10922 states and 17894 transitions. [2024-11-28 02:48:51,373 INFO L78 Accepts]: Start accepts. Automaton has 10922 states and 17894 transitions. Word has length 184 [2024-11-28 02:48:51,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:48:51,374 INFO L471 AbstractCegarLoop]: Abstraction has 10922 states and 17894 transitions. [2024-11-28 02:48:51,374 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 7 states have internal predecessors, (123), 4 states have call successors, (20), 4 states have call predecessors, (20), 6 states have return successors, (19), 6 states have call predecessors, (19), 4 states have call successors, (19) [2024-11-28 02:48:51,374 INFO L276 IsEmpty]: Start isEmpty. Operand 10922 states and 17894 transitions. [2024-11-28 02:48:51,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2024-11-28 02:48:51,385 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:48:51,385 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:48:51,397 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-28 02:48:51,585 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:48:51,586 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:48:51,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:48:51,586 INFO L85 PathProgramCache]: Analyzing trace with hash 2062823253, now seen corresponding path program 1 times [2024-11-28 02:48:51,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:48:51,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848244804] [2024-11-28 02:48:51,586 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:48:51,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:48:51,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:48:51,803 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2024-11-28 02:48:51,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:48:51,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848244804] [2024-11-28 02:48:51,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848244804] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:48:51,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:48:51,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 02:48:51,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774850515] [2024-11-28 02:48:51,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:48:51,804 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 02:48:51,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:48:51,805 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 02:48:51,805 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:48:51,805 INFO L87 Difference]: Start difference. First operand 10922 states and 17894 transitions. Second operand has 8 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-28 02:48:52,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:48:52,583 INFO L93 Difference]: Finished difference Result 21541 states and 35299 transitions. [2024-11-28 02:48:52,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 02:48:52,583 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 187 [2024-11-28 02:48:52,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:48:52,683 INFO L225 Difference]: With dead ends: 21541 [2024-11-28 02:48:52,683 INFO L226 Difference]: Without dead ends: 10304 [2024-11-28 02:48:52,733 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:48:52,734 INFO L435 NwaCegarLoop]: 820 mSDtfsCounter, 30 mSDsluCounter, 4890 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 5710 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:48:52,734 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 5710 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:48:52,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10304 states. [2024-11-28 02:48:53,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10304 to 10280. [2024-11-28 02:48:53,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10280 states, 8019 states have (on average 1.617533358274099) internal successors, (12971), 8365 states have internal predecessors, (12971), 1630 states have call successors, (1630), 473 states have call predecessors, (1630), 630 states have return successors, (2201), 1570 states have call predecessors, (2201), 1622 states have call successors, (2201) [2024-11-28 02:48:53,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10280 states to 10280 states and 16802 transitions. [2024-11-28 02:48:53,476 INFO L78 Accepts]: Start accepts. Automaton has 10280 states and 16802 transitions. Word has length 187 [2024-11-28 02:48:53,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:48:53,476 INFO L471 AbstractCegarLoop]: Abstraction has 10280 states and 16802 transitions. [2024-11-28 02:48:53,476 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-28 02:48:53,476 INFO L276 IsEmpty]: Start isEmpty. Operand 10280 states and 16802 transitions. [2024-11-28 02:48:53,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2024-11-28 02:48:53,487 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:48:53,488 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 12, 9, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:48:53,488 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-11-28 02:48:53,488 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:48:53,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:48:53,489 INFO L85 PathProgramCache]: Analyzing trace with hash 520616512, now seen corresponding path program 1 times [2024-11-28 02:48:53,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:48:53,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597701450] [2024-11-28 02:48:53,489 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:48:53,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:48:53,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:48:54,609 INFO L134 CoverageAnalysis]: Checked inductivity of 1340 backedges. 27 proven. 146 refuted. 0 times theorem prover too weak. 1167 trivial. 0 not checked. [2024-11-28 02:48:54,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:48:54,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597701450] [2024-11-28 02:48:54,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597701450] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:48:54,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1339068207] [2024-11-28 02:48:54,614 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:48:54,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:48:54,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:48:54,619 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:48:54,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-28 02:48:55,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:48:55,555 INFO L256 TraceCheckSpWp]: Trace formula consists of 4030 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 02:48:55,567 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:48:55,629 INFO L134 CoverageAnalysis]: Checked inductivity of 1340 backedges. 658 proven. 0 refuted. 0 times theorem prover too weak. 682 trivial. 0 not checked. [2024-11-28 02:48:55,630 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:48:55,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1339068207] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:48:55,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:48:55,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2024-11-28 02:48:55,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271357579] [2024-11-28 02:48:55,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:48:55,631 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:48:55,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:48:55,633 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:48:55,633 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-28 02:48:55,633 INFO L87 Difference]: Start difference. First operand 10280 states and 16802 transitions. Second operand has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 3 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) [2024-11-28 02:48:56,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:48:56,623 INFO L93 Difference]: Finished difference Result 21056 states and 34848 transitions. [2024-11-28 02:48:56,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:48:56,624 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 3 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) Word has length 531 [2024-11-28 02:48:56,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:48:56,781 INFO L225 Difference]: With dead ends: 21056 [2024-11-28 02:48:56,781 INFO L226 Difference]: Without dead ends: 15668 [2024-11-28 02:48:56,828 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 546 GetRequests, 537 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-28 02:48:56,829 INFO L435 NwaCegarLoop]: 854 mSDtfsCounter, 838 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 838 SdHoareTripleChecker+Valid, 1658 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:48:56,829 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [838 Valid, 1658 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:48:56,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15668 states. [2024-11-28 02:48:57,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15668 to 15666. [2024-11-28 02:48:57,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15666 states, 12169 states have (on average 1.6169775659462569) internal successors, (19677), 12722 states have internal predecessors, (19677), 2542 states have call successors, (2542), 718 states have call predecessors, (2542), 954 states have return successors, (3600), 2483 states have call predecessors, (3600), 2530 states have call successors, (3600) [2024-11-28 02:48:57,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15666 states to 15666 states and 25819 transitions. [2024-11-28 02:48:57,892 INFO L78 Accepts]: Start accepts. Automaton has 15666 states and 25819 transitions. Word has length 531 [2024-11-28 02:48:57,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:48:57,893 INFO L471 AbstractCegarLoop]: Abstraction has 15666 states and 25819 transitions. [2024-11-28 02:48:57,893 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 3 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) [2024-11-28 02:48:57,893 INFO L276 IsEmpty]: Start isEmpty. Operand 15666 states and 25819 transitions. [2024-11-28 02:48:57,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 533 [2024-11-28 02:48:57,908 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:48:57,909 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 12, 9, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:48:57,921 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-28 02:48:58,109 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-11-28 02:48:58,109 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:48:58,110 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:48:58,110 INFO L85 PathProgramCache]: Analyzing trace with hash 104962547, now seen corresponding path program 1 times [2024-11-28 02:48:58,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:48:58,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824868826] [2024-11-28 02:48:58,111 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:48:58,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:48:58,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:48:59,039 INFO L134 CoverageAnalysis]: Checked inductivity of 1340 backedges. 27 proven. 146 refuted. 0 times theorem prover too weak. 1167 trivial. 0 not checked. [2024-11-28 02:48:59,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:48:59,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824868826] [2024-11-28 02:48:59,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824868826] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:48:59,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033036303] [2024-11-28 02:48:59,040 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:48:59,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:48:59,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:48:59,045 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:48:59,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-28 02:48:59,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:48:59,990 INFO L256 TraceCheckSpWp]: Trace formula consists of 4031 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 02:49:00,007 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:49:00,084 INFO L134 CoverageAnalysis]: Checked inductivity of 1340 backedges. 658 proven. 0 refuted. 0 times theorem prover too weak. 682 trivial. 0 not checked. [2024-11-28 02:49:00,084 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:49:00,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1033036303] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:49:00,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:49:00,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2024-11-28 02:49:00,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681077288] [2024-11-28 02:49:00,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:49:00,086 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:49:00,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:49:00,087 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:49:00,087 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-28 02:49:00,087 INFO L87 Difference]: Start difference. First operand 15666 states and 25819 transitions. Second operand has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 2 states have call successors, (39), 2 states have call predecessors, (39), 3 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2024-11-28 02:49:01,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:49:01,672 INFO L93 Difference]: Finished difference Result 31425 states and 52318 transitions. [2024-11-28 02:49:01,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:49:01,673 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 2 states have call successors, (39), 2 states have call predecessors, (39), 3 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) Word has length 532 [2024-11-28 02:49:01,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:49:01,936 INFO L225 Difference]: With dead ends: 31425 [2024-11-28 02:49:01,937 INFO L226 Difference]: Without dead ends: 15801 [2024-11-28 02:49:02,017 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 548 GetRequests, 537 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-11-28 02:49:02,018 INFO L435 NwaCegarLoop]: 823 mSDtfsCounter, 22 mSDsluCounter, 1622 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 2445 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:49:02,018 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 2445 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:49:02,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15801 states. [2024-11-28 02:49:02,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15801 to 15801. [2024-11-28 02:49:02,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15801 states, 12289 states have (on average 1.618276507445683) internal successors, (19887), 12842 states have internal predecessors, (19887), 2542 states have call successors, (2542), 733 states have call predecessors, (2542), 969 states have return successors, (3600), 2483 states have call predecessors, (3600), 2530 states have call successors, (3600) [2024-11-28 02:49:03,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15801 states to 15801 states and 26029 transitions. [2024-11-28 02:49:03,215 INFO L78 Accepts]: Start accepts. Automaton has 15801 states and 26029 transitions. Word has length 532 [2024-11-28 02:49:03,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:49:03,216 INFO L471 AbstractCegarLoop]: Abstraction has 15801 states and 26029 transitions. [2024-11-28 02:49:03,216 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 2 states have call successors, (39), 2 states have call predecessors, (39), 3 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2024-11-28 02:49:03,217 INFO L276 IsEmpty]: Start isEmpty. Operand 15801 states and 26029 transitions. [2024-11-28 02:49:03,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 534 [2024-11-28 02:49:03,238 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:49:03,239 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 12, 9, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:49:03,257 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-28 02:49:03,439 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-11-28 02:49:03,440 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:49:03,440 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:49:03,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1183374983, now seen corresponding path program 1 times [2024-11-28 02:49:03,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:49:03,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692604359] [2024-11-28 02:49:03,441 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:49:03,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:49:03,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:49:04,264 INFO L134 CoverageAnalysis]: Checked inductivity of 1340 backedges. 27 proven. 146 refuted. 0 times theorem prover too weak. 1167 trivial. 0 not checked. [2024-11-28 02:49:04,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:49:04,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692604359] [2024-11-28 02:49:04,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692604359] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:49:04,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1660700639] [2024-11-28 02:49:04,265 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:49:04,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:49:04,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:49:04,267 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:49:04,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-28 02:49:05,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:49:05,172 INFO L256 TraceCheckSpWp]: Trace formula consists of 4032 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 02:49:05,181 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:49:05,237 INFO L134 CoverageAnalysis]: Checked inductivity of 1340 backedges. 660 proven. 0 refuted. 0 times theorem prover too weak. 680 trivial. 0 not checked. [2024-11-28 02:49:05,237 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:49:05,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1660700639] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:49:05,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:49:05,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2024-11-28 02:49:05,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268988086] [2024-11-28 02:49:05,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:49:05,238 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:49:05,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:49:05,239 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:49:05,240 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-28 02:49:05,240 INFO L87 Difference]: Start difference. First operand 15801 states and 26029 transitions. Second operand has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 2 states have call successors, (39), 2 states have call predecessors, (39), 3 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2024-11-28 02:49:06,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:49:06,155 INFO L93 Difference]: Finished difference Result 31695 states and 52678 transitions. [2024-11-28 02:49:06,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:49:06,156 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 2 states have call successors, (39), 2 states have call predecessors, (39), 3 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) Word has length 533 [2024-11-28 02:49:06,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:49:06,277 INFO L225 Difference]: With dead ends: 31695 [2024-11-28 02:49:06,278 INFO L226 Difference]: Without dead ends: 15936 [2024-11-28 02:49:06,373 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 549 GetRequests, 538 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-11-28 02:49:06,374 INFO L435 NwaCegarLoop]: 821 mSDtfsCounter, 20 mSDsluCounter, 1618 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2439 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:49:06,374 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2439 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:49:06,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15936 states. [2024-11-28 02:49:07,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15936 to 15936. [2024-11-28 02:49:07,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15936 states, 12409 states have (on average 1.6195503263760174) internal successors, (20097), 12962 states have internal predecessors, (20097), 2542 states have call successors, (2542), 748 states have call predecessors, (2542), 984 states have return successors, (3600), 2483 states have call predecessors, (3600), 2530 states have call successors, (3600) [2024-11-28 02:49:07,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15936 states to 15936 states and 26239 transitions. [2024-11-28 02:49:07,921 INFO L78 Accepts]: Start accepts. Automaton has 15936 states and 26239 transitions. Word has length 533 [2024-11-28 02:49:07,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:49:07,922 INFO L471 AbstractCegarLoop]: Abstraction has 15936 states and 26239 transitions. [2024-11-28 02:49:07,922 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 2 states have call successors, (39), 2 states have call predecessors, (39), 3 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2024-11-28 02:49:07,922 INFO L276 IsEmpty]: Start isEmpty. Operand 15936 states and 26239 transitions. [2024-11-28 02:49:07,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 534 [2024-11-28 02:49:07,952 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:49:07,953 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 12, 9, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:49:07,971 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-28 02:49:08,153 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:49:08,153 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:49:08,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:49:08,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1477218111, now seen corresponding path program 1 times [2024-11-28 02:49:08,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:49:08,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623223079] [2024-11-28 02:49:08,155 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:49:08,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:49:08,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:49:09,175 INFO L134 CoverageAnalysis]: Checked inductivity of 1340 backedges. 27 proven. 146 refuted. 0 times theorem prover too weak. 1167 trivial. 0 not checked. [2024-11-28 02:49:09,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:49:09,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623223079] [2024-11-28 02:49:09,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623223079] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:49:09,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [212218192] [2024-11-28 02:49:09,176 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:49:09,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:49:09,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:49:09,181 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:49:09,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-28 02:49:10,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:49:10,170 INFO L256 TraceCheckSpWp]: Trace formula consists of 4032 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 02:49:10,186 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:49:10,747 INFO L134 CoverageAnalysis]: Checked inductivity of 1340 backedges. 739 proven. 260 refuted. 0 times theorem prover too weak. 341 trivial. 0 not checked. [2024-11-28 02:49:10,748 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:49:12,034 INFO L134 CoverageAnalysis]: Checked inductivity of 1340 backedges. 133 proven. 36 refuted. 0 times theorem prover too weak. 1171 trivial. 0 not checked. [2024-11-28 02:49:12,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [212218192] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:49:12,035 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:49:12,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6, 5] total 16 [2024-11-28 02:49:12,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61485567] [2024-11-28 02:49:12,035 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:49:12,037 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-28 02:49:12,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:49:12,038 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-28 02:49:12,038 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2024-11-28 02:49:12,039 INFO L87 Difference]: Start difference. First operand 15936 states and 26239 transitions. Second operand has 16 states, 16 states have (on average 27.25) internal successors, (436), 14 states have internal predecessors, (436), 11 states have call successors, (106), 7 states have call predecessors, (106), 10 states have return successors, (106), 13 states have call predecessors, (106), 11 states have call successors, (106) [2024-11-28 02:49:36,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:49:36,269 INFO L93 Difference]: Finished difference Result 75526 states and 131303 transitions. [2024-11-28 02:49:36,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-11-28 02:49:36,270 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 27.25) internal successors, (436), 14 states have internal predecessors, (436), 11 states have call successors, (106), 7 states have call predecessors, (106), 10 states have return successors, (106), 13 states have call predecessors, (106), 11 states have call successors, (106) Word has length 533 [2024-11-28 02:49:36,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:49:36,712 INFO L225 Difference]: With dead ends: 75526 [2024-11-28 02:49:36,712 INFO L226 Difference]: Without dead ends: 59558 [2024-11-28 02:49:36,883 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1145 GetRequests, 1083 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1040 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=562, Invalid=3344, Unknown=0, NotChecked=0, Total=3906 [2024-11-28 02:49:36,883 INFO L435 NwaCegarLoop]: 1281 mSDtfsCounter, 10619 mSDsluCounter, 7635 mSDsCounter, 0 mSdLazyCounter, 26133 mSolverCounterSat, 4312 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10619 SdHoareTripleChecker+Valid, 8916 SdHoareTripleChecker+Invalid, 30445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 4312 IncrementalHoareTripleChecker+Valid, 26133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:49:36,884 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10619 Valid, 8916 Invalid, 30445 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [4312 Valid, 26133 Invalid, 0 Unknown, 0 Unchecked, 18.2s Time] [2024-11-28 02:49:36,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59558 states. [2024-11-28 02:49:42,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59558 to 50704. [2024-11-28 02:49:42,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50704 states, 38099 states have (on average 1.5940575868133022) internal successors, (60732), 40280 states have internal predecessors, (60732), 9530 states have call successors, (9530), 2192 states have call predecessors, (9530), 3074 states have return successors, (14863), 9567 states have call predecessors, (14863), 9510 states have call successors, (14863) [2024-11-28 02:49:43,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50704 states to 50704 states and 85125 transitions. [2024-11-28 02:49:43,064 INFO L78 Accepts]: Start accepts. Automaton has 50704 states and 85125 transitions. Word has length 533 [2024-11-28 02:49:43,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:49:43,065 INFO L471 AbstractCegarLoop]: Abstraction has 50704 states and 85125 transitions. [2024-11-28 02:49:43,065 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 27.25) internal successors, (436), 14 states have internal predecessors, (436), 11 states have call successors, (106), 7 states have call predecessors, (106), 10 states have return successors, (106), 13 states have call predecessors, (106), 11 states have call successors, (106) [2024-11-28 02:49:43,065 INFO L276 IsEmpty]: Start isEmpty. Operand 50704 states and 85125 transitions. [2024-11-28 02:49:43,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 553 [2024-11-28 02:49:43,090 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:49:43,091 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 12, 10, 10, 9, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:49:43,110 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-28 02:49:43,291 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:49:43,292 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:49:43,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:49:43,292 INFO L85 PathProgramCache]: Analyzing trace with hash 240103108, now seen corresponding path program 1 times [2024-11-28 02:49:43,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:49:43,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511348570] [2024-11-28 02:49:43,292 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:49:43,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:49:43,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:49:43,989 INFO L134 CoverageAnalysis]: Checked inductivity of 1433 backedges. 29 proven. 138 refuted. 0 times theorem prover too weak. 1266 trivial. 0 not checked. [2024-11-28 02:49:43,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:49:43,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511348570] [2024-11-28 02:49:43,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511348570] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:49:43,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86595278] [2024-11-28 02:49:43,990 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:49:43,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:49:43,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:49:43,993 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:49:43,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8ce36-8615-4066-a3f7-77eed4c17c32/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-28 02:49:44,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:49:45,015 INFO L256 TraceCheckSpWp]: Trace formula consists of 4090 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 02:49:45,026 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:49:45,066 INFO L134 CoverageAnalysis]: Checked inductivity of 1433 backedges. 677 proven. 0 refuted. 0 times theorem prover too weak. 756 trivial. 0 not checked. [2024-11-28 02:49:45,066 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:49:45,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [86595278] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:49:45,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:49:45,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2024-11-28 02:49:45,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608852485] [2024-11-28 02:49:45,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:49:45,069 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:49:45,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:49:45,070 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:49:45,070 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:49:45,071 INFO L87 Difference]: Start difference. First operand 50704 states and 85125 transitions. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 2 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (39), 3 states have call predecessors, (39), 2 states have call successors, (39)